Result of trunk-no-theap@silicon-docker at 2020-09-18 21:08:15 +0900

<style>
.lines::before {
  content: attr(alt);
  color: gray;
  font-size: 80%;
  margin-right: 1em;
}

.stderr_line::before {
  content: '[stderr]';
  margin-right: 1em;
  color: red;
  font-size: 80%;
}

.success_line::before {
  content: '🟩';
  margin-right: 0.5em;
}

.failed_line::before {
  content: '🟥';
  margin-right: 0.5em;
}

.warn_line::before {
  content: '🟨';
  margin-right: 0.5em;
}

.stderr_line {
  font-family: monospace;
  white-space: pre;
}
</style>
<div><a href='/'>top</a> / <a href='/results/trunk-no-theap@silicon-docker'>trunk-no-theap@silicon-docker</a></div>
<h1>Result of trunk-no-theap@silicon-docker at <a href='/results/trunk-no-theap@silicon-docker/3193909'>2020-09-18 21:08:15 +0900</a></h1>
<p>
    <ul>
      <li class='failed_line'>NG (5bb5e706f1)
        <a href='http://ci.rvm.jp/logfiles/brlog.trunk-no-theap.20200918-090703'>[LOG]</a>
      </li>
      
      <li><pre>Linux silicon-docker 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u5 (2019-08-11) x86_64 x86_64 x86_64 GNU&#x2F;Linux
</pre></li>
      <li><pre>rev: 5bb5e706f1
test-all : 
test-spec: 
exit statuses:
  &quot;rm -f .revision.time&quot; exit with 0.
  &quot;make update-unicode  DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make update-download DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make update-rubyspec DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make update-src      DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make after-update    DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make miniruby DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make ruby DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make all DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make install DEFS=-DUSE_TRANSIENT_HEAP=0&quot; exit with 0.
  &quot;make yes-btest TESTS=&#x27;-j6&#x27;&quot; exit with 0.
  &quot;make yes-test-basic TESTS=&#x27;-j6&#x27;&quot; exit with 0.
Logfile: &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;logs&#x2F;brlog.trunk-no-theap.20200918-090703
#&lt;BuildRuby:0x0000560f1f025470
 @BUILD_DIR=&quot;&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;build&quot;,
 @INSTALL_DIR=&quot;&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;install&quot;,
 @REPOSITORY=&quot;https:&#x2F;&#x2F;github.com&#x2F;ruby&#x2F;ruby.git&quot;,
 @REPOSITORY_TYPE=:git,
 @SRC_DIR=&quot;&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&quot;,
 @TARGET_BUILD_DIR=&quot;&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;build&#x2F;trunk-no-theap&quot;,
 @TARGET_INSTALL_DIR=&quot;&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;install&#x2F;trunk-no-theap&quot;,
 @TARGET_NAME=&quot;trunk-no-theap&quot;,
 @TARGET_SRC_DIR=&quot;&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&quot;,
 @build_opts=&quot;DEFS=-DUSE_TRANSIENT_HEAP=0&quot;,
 @configure_opts=[&quot;--enable-shared&quot;],
 @gist=false,
 @git_branch=nil,
 @incremental=true,
 @logfile=&quot;&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;logs&#x2F;brlog.trunk-no-theap.20200918-090703&quot;,
 @quiet=false,
 @ruby_env=[[&quot;RUBY_DEBUG&quot;, &quot;ci&quot;]],
 @steps=
  [&quot;checkout&quot;,
   &quot;autoconf&quot;,
   &quot;configure&quot;,
   &quot;build_up&quot;,
   &quot;build_miniruby&quot;,
   &quot;build_ruby&quot;,
   &quot;build_all&quot;,
   &quot;build_install&quot;,
   &quot;test_btest&quot;,
   &quot;test_basic&quot;,
   &quot;test_all&quot;,
   &quot;test_rubyspec&quot;],
 @svn_revision=nil,
 @test_opts=&quot;TESTS=&#x27;-j6&#x27;&quot;,
 @timeout=10800&gt;
                           user     system      total        real
checkout               0.000000   0.000000   0.000000 (  0.000018)
autoconf               0.000000   0.000000   0.000000 (  0.000034)
configure              0.000000   0.000000   0.000000 (  0.000038)
build_up             From https:&#x2F;&#x2F;github.com&#x2F;ruby&#x2F;ruby
   305c430..5bb5e70  master     -&gt; origin&#x2F;master
  0.008000   0.008000   9.012000 ( 11.663225)
build_miniruby         0.000000   0.000000   0.116000 (  0.127613)
build_ruby             0.000000   0.004000   3.108000 (  3.170428)
build_all              0.004000   0.012000   8.144000 (  8.585346)
build_install          0.016000   0.004000   5.212000 (  5.603508)
test_btest           test_attr.rb             ..
test_autoload.rb         ........
test_block.rb            ..........................................................
test_class.rb            ................................................
test_env.rb              ..
test_eval.rb             .....................................
test_exception.rb        ..................................
test_fiber.rb            .....
test_finalizer.rb        .
test_flip.rb             .
test_flow.rb             ..............................................................
test_fork.rb             ....
test_gc.rb               ..
test_insns.rb            ...................................................................................................................................................................................................................................................................................................................................................................................................
test_io.rb               .........
test_jump.rb             .............................
test_literal.rb          ............................................................................................................................................................
test_literal_suffix.rb   ................................................
test_load.rb             ..
test_marshal.rb          .
test_massign.rb          ..................................
test_method.rb           ...............................................................................................................................................................................................................................
test_objectspace.rb      ......
test_proc.rb             .....................................
test_ractor.rb           .....................................
test_string.rb           .
test_struct.rb           .
test_syntax.rb           ............................................................................................................................................................
test_thread.rb           .................................................
Fiber count: 10000 (skipping)
PASS all 1440 tests
  0.004000   0.000000  23.640000 ( 25.627896)
test_basic             0.008000   0.000000   0.392000 (  0.510176)
test_all             $$$ #&lt;Timeout::Error: execution expired&gt;
### enter analyzing mode for stuck processes

$$$ ps jx
 PPID   PID  PGID   SID TTY      TPGID STAT   UID   TIME COMMAND
   11    12    12    12 ?           -1 Ss    1001   0:00 sh build-loop.sh trunk-no-theap --incremental --process-num=6
29864  1802    12    12 ?           -1 S     1001   0:00 sh -c make yes-test-all TESTS=&#x27;-j6&#x27;
 1802  1804    12    12 ?           -1 S     1001   0:00 make yes-test-all TESTS=-j6
 1804  1811    12    12 ?           -1 S     1001   0:00 &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;build&#x2F;trunk-no-theap&#x2F;ruby --disable-gems &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;runner.rb --ruby=.&#x2F;miniruby -I&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib -I. -I.ext&#x2F;common  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;runruby.rb --extout=.ext  -- --disable-gems --excludes-dir=&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;excludes --name=!&#x2F;memory_leak&#x2F; -j6
 1811  1812    12    12 ?           -1 Sl    1001   0:04 &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb: TestMonitor#test_cond
 1811  1813    12    12 ?           -1 Sl    1001   0:00 &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb
 1811  1814    12    12 ?           -1 Sl    1001   0:01 &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb
 1811  1815    12    12 ?           -1 Sl    1001   0:12 &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb: IMAPTest#test_append
 1811  1816    12    12 ?           -1 Sl    1001   0:01 &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb: TestIO_Console#test_raw_minchar
 1811  1817    12    12 ?           -1 Sl    1001   0:02 &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb
29864  3239    12    12 ?           -1 R     1001   0:00 ps jx
   12 29861    12    12 ?           -1 Sl    1001   0:00 ruby .&#x2F;br.rb build_report trunk-no-theap --incremental --process-num=6
29861 29863    12    12 ?           -1 S     1001   0:00 sh -c ruby &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb --target_name=trunk-no-theap --logfile=&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;logs&#x2F;brlog.trunk-no-theap.20200918-090703 --root_dir=&#x2F;tmp&#x2F;ruby --timeout=10800 --build_opts=&#x27;DEFS=-DUSE_TRANSIENT_HEAP=0&#x27; --incremental --process-num=6
29863 29864    12    12 ?           -1 Sl    1001   0:00 ruby &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb --target_name=trunk-no-theap --logfile=&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;logs&#x2F;brlog.trunk-no-theap.20200918-090703 --root_dir=&#x2F;tmp&#x2F;ruby --timeout=10800 --build_opts=DEFS=-DUSE_TRANSIENT_HEAP=0 --incremental --process-num=6
{11=&gt;[12], 29864=&gt;[1802, 3239], 1802=&gt;[1804], 1804=&gt;[1811], 1811=&gt;[1812, 1813, 1814, 1815, 1816, 1817], 12=&gt;[29861], 29861=&gt;[29863], 29863=&gt;[29864]}
&quot;gdb -p 1812 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
[New LWP 1818]
[New LWP 3157]
[New LWP 3158]
[Thread debugging using libthread_db enabled]
Using host libthread_db library &quot;&#x2F;lib&#x2F;x86_64-linux-gnu&#x2F;libthread_db.so.1&quot;.
39	..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c: No such file or directory.
0x00007efd4ce27cf6 in __GI_ppoll (fds=fds@entry=0x7ffcbf681b18, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
&gt;&gt;&gt; Threads  Id   Target Id         Frame 
* 1    Thread 0x7efd4d8f2d80 (LWP 1812) &quot;ruby&quot; 0x00007efd4ce27cf6 in __GI_ppoll (fds=fds@entry=0x7ffcbf681b18, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
  2    Thread 0x7efd4aa1e700 (LWP 1818) &quot;parallel.rb:43&quot; 0x00007efd4ce27bf9 in __GI___poll (fds=fds@entry=0x7efd4a91d660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
  3    Thread 0x7efd49fd3700 (LWP 3157) &quot;test_monitor.r*&quot; 0x00007efd4c8e49f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x5627c1f47fe8) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;futex-internal.h:88
  4    Thread 0x7efd35207700 (LWP 3158) &quot;test_monitor.r*&quot; 0x00007efd4c8e49f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x5627c1e6e538) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;futex-internal.h:88
&gt;&gt;&gt; Machine level backtrace

Thread 4 (Thread 0x7efd35207700 (LWP 3158)):
#0  0x00007efd4c8e49f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x5627c1e6e538) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5627c1e6e568, cond=0x5627c1e6e510) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5627c1e6e510, mutex=0x5627c1e6e568) at pthread_cond_wait.c:655
#3  0x00007efd4d3575e9 in rb_native_cond_wait (cond=&lt;optimized out&gt;, mutex=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:499
#4  0x00007efd4d359324 in native_cond_sleep (th=th@entry=0x5627c1e6e4a0, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:1205
#5  0x00007efd4d35967d in native_sleep (th=th@entry=0x5627c1e6e4a0, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2149
#6  0x00007efd4d35dbd3 in sleep_forever (fl=1, th=0x5627c1e6e4a0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1400
#7  rb_thread_sleep_deadly_allow_spurious_wakeup (blocker=blocker@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1495
#8  rb_mutex_sleep_forever (self=self@entry=94728753301840) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:487
#9  0x00007efd4d1d6184 in rb_ensure (b_proc=b_proc@entry=0x7efd4d35db20 &lt;rb_mutex_sleep_forever&gt;, data1=data1@entry=94728753301840, e_proc=e_proc@entry=0x7efd4d35c500 &lt;mutex_lock_uninterruptible&gt;, data2=data2@entry=94728753301840) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#10 0x00007efd4d35c683 in rb_mutex_sleep (self=94728753301840, timeout=8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:518
#11 0x00007efd4d3a29c8 in vm_call0_cfunc_with_frame (argv=0x7efd35105ee8, cd=0x7efd35105c70, calling=0x7efd35105c80, ec=0x5627c1ea3590) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:97
#12 vm_call0_cfunc (argv=0x7efd35105ee8, cd=0x7efd35105c70, calling=0x7efd35105c80, ec=0x5627c1ea3590) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:111
#13 vm_call0_body (argv=0x7efd35105ee8, cd=0x7efd35105c70, calling=0x7efd35105c80, ec=0x5627c1ea3590) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:146
#14 rb_vm_call0 (ec=ec@entry=0x5627c1ea3590, recv=recv@entry=94728753301840, id=id@entry=24481, argc=argc@entry=1, argv=argv@entry=0x7efd35105ee8, me=me@entry=0x5627c11215f8, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:59
#15 0x00007efd4d3a31f5 in rb_vm_call_kw (ec=ec@entry=0x5627c1ea3590, recv=recv@entry=94728753301840, id=id@entry=24481, argc=argc@entry=1, argv=argv@entry=0x7efd35105ee8, me=me@entry=0x5627c11215f8, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:239
#16 0x00007efd4d3a4a59 in rb_call0 (self=&lt;optimized out&gt;, call_scope=CALL_FCALL, argv=0x7efd35105ee8, argc=1, mid=24481, recv=94728753301840, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:361
#17 rb_call (scope=CALL_FCALL, argv=0x7efd35105ee8, argc=1, mid=24481, recv=94728753301840) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:689
#18 rb_funcallv (recv=94728753301840, mid=24481, argc=1, argv=0x7efd35105ee8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:930
#19 0x00007efd4d1d6184 in rb_ensure (b_proc=b_proc@entry=0x7efd4d353740 &lt;do_sleep&gt;, data1=data1@entry=139625982090976, e_proc=e_proc@entry=0x7efd4d352fc0 &lt;delete_from_waitq&gt;, data2=data2@entry=139625982090992) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#20 0x00007efd4d353c88 in rb_condvar_wait (argc=2, argv=0x7efd35106100, self=94728753299600) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:1460
#21 0x00007efd4d3a29c8 in vm_call0_cfunc_with_frame (argv=0x7efd35106100, cd=0x7efd35105f80, calling=0x7efd35105f90, ec=0x5627c1ea3590) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:97
#22 vm_call0_cfunc (argv=0x7efd35106100, cd=0x7efd35105f80, calling=0x7efd35105f90, ec=0x5627c1ea3590) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:111
#23 vm_call0_body (argv=0x7efd35106100, cd=0x7efd35105f80, calling=0x7efd35105f90, ec=0x5627c1ea3590) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:146
#24 rb_vm_call0 (ec=ec@entry=0x5627c1ea3590, recv=recv@entry=94728753299600, id=id@entry=24641, argc=argc@entry=2, argv=argv@entry=0x7efd35106100, me=me@entry=0x5627c1120cc0, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:59
#25 0x00007efd4d3a31f5 in rb_vm_call_kw (ec=ec@entry=0x5627c1ea3590, recv=recv@entry=94728753299600, id=id@entry=24641, argc=argc@entry=2, argv=argv@entry=0x7efd35106100, me=me@entry=0x5627c1120cc0, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:239
#26 0x00007efd4d3a4a59 in rb_call0 (self=&lt;optimized out&gt;, call_scope=CALL_FCALL, argv=0x7efd35106100, argc=2, mid=24641, recv=94728753299600, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:361
#27 rb_call (scope=CALL_FCALL, argv=0x7efd35106100, argc=2, mid=24641, recv=94728753299600) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:689
#28 rb_funcallv (recv=94728753299600, mid=24641, argc=argc@entry=2, argv=argv@entry=0x7efd35106100) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:930
#29 0x00007efd4aa1fefd in monitor_wait_for_cond_body (v=v@entry=139625982091840) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;ext&#x2F;monitor&#x2F;monitor.c:152
#30 0x00007efd4d1d6184 in rb_ensure (b_proc=b_proc@entry=0x7efd4aa1fe80 &lt;monitor_wait_for_cond_body&gt;, data1=data1@entry=139625982091840, e_proc=e_proc@entry=0x7efd4aa20050 &lt;monitor_enter_for_cond&gt;, data2=data2@entry=139625982091840) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#31 0x00007efd4aa1ffbd in monitor_wait_for_cond (monitor=94728753301880, cond=&lt;optimized out&gt;, timeout=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;ext&#x2F;monitor&#x2F;monitor.c:180
#32 0x00007efd4d38e735 in vm_call_cfunc_with_frame (ec=ec@entry=0x5627c1ea3590, reg_cfp=reg_cfp@entry=0x7efd35206be8, calling=calling@entry=0x7efd351064e0, cd=cd@entry=0x5627c161ba60) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#33 0x00007efd4d38e9c5 in vm_call_cfunc (ec=ec@entry=0x5627c1ea3590, reg_cfp=reg_cfp@entry=0x7efd35206be8, calling=calling@entry=0x7efd351064e0, cd=cd@entry=0x5627c161ba60) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#34 0x00007efd4d3a8bfe in vm_call_method_each_type (ec=ec@entry=0x5627c1ea3590, cfp=cfp@entry=0x7efd35206be8, calling=0x7efd351064e0, cd=0x5627c161ba60) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#35 0x00007efd4d3a9353 in vm_call_method (ec=0x5627c1ea3590, cfp=0x7efd35206be8, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#36 0x00007efd4d3997e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#37 vm_exec_core (ec=0x5627c1ea3590, initial=128, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#38 0x00007efd4d39f88d in rb_vm_exec (ec=0x5627c1ea3590, mjit_enable_p=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#39 0x00007efd4d3a0d27 in vm_yield (kw_splat=0, argv=0x0, argc=0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#40 rb_yield_0 (argv=0x0, argc=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#41 rb_yield_values2 (argc=0, argv=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1187
#42 0x00007efd4d1d6184 in rb_ensure (b_proc=0x7efd4aa1fe70 &lt;monitor_sync_body&gt;, data1=94728753301880, e_proc=&lt;optimized out&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#43 0x00007efd4d38e735 in vm_call_cfunc_with_frame (ec=ec@entry=0x5627c1ea3590, reg_cfp=reg_cfp@entry=0x7efd35206c90, calling=calling@entry=0x7efd35106a50, cd=cd@entry=0x5627c1804630) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#44 0x00007efd4d38e9c5 in vm_call_cfunc (ec=ec@entry=0x5627c1ea3590, reg_cfp=reg_cfp@entry=0x7efd35206c90, calling=calling@entry=0x7efd35106a50, cd=cd@entry=0x5627c1804630) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#45 0x00007efd4d3a8bfe in vm_call_method_each_type (ec=ec@entry=0x5627c1ea3590, cfp=cfp@entry=0x7efd35206c90, calling=0x7efd35106a50, cd=0x5627c1804630) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#46 0x00007efd4d3a9353 in vm_call_method (ec=0x5627c1ea3590, cfp=0x7efd35206c90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#47 0x00007efd4d3998ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#48 vm_exec_core (ec=0x5627c1ea3590, initial=128, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#49 0x00007efd4d39f88d in rb_vm_exec (ec=0x5627c1ea3590, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#50 0x00007efd4d3a017f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5627c1ea3590, self=self@entry=139625982094032, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#51 0x00007efd4d3a1223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=890268752, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=139625982094032, captured=0x5627c1e6e4a0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#52 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=890268912, argv=0x7efd35106c50, argc=&lt;optimized out&gt;, self=139625982094032, proc=0x5627c1100dd0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#53 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5627c1100dd0, self=139625982094032, argc=argc@entry=890268752, argv=argv@entry=0x7efd35106cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#54 0x00007efd4d3a259d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5627c1100dd0, argc=argc@entry=890268752, argv=argv@entry=0x7efd35106cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#55 0x00007efd4d35b0bd in thread_do_start_proc (th=0x5627c1e6e4a0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 3 (Thread 0x7efd49fd3700 (LWP 3157)):
#0  0x00007efd4c8e49f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x5627c1f47fe8) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5627c1f48018, cond=0x5627c1f47fc0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5627c1f47fc0, mutex=0x5627c1f48018) at pthread_cond_wait.c:655
#3  0x00007efd4d3575e9 in rb_native_cond_wait (cond=&lt;optimized out&gt;, mutex=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:499
#4  0x00007efd4d359324 in native_cond_sleep (th=th@entry=0x5627c1f47f50, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:1205
#5  0x00007efd4d35967d in native_sleep (th=0x5627c1f47f50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2149
#6  0x00007efd4d35dd13 in queue_sleep () at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.h:93
#7  0x00007efd4d1d6184 in rb_ensure (b_proc=b_proc@entry=0x7efd4d35dc60 &lt;queue_sleep&gt;, data1=data1@entry=94728742538760, e_proc=e_proc@entry=0x7efd4d352f70 &lt;queue_sleep_done&gt;, data2=data2@entry=139626332104592) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#8  0x00007efd4d354e03 in queue_do_pop (self=94728742538760, q=0x5627c1f76710, should_block=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:969
#9  0x00007efd4d38e735 in vm_call_cfunc_with_frame (ec=ec@entry=0x5627c1f4e1f0, reg_cfp=reg_cfp@entry=0x7efd49fd2c90, calling=calling@entry=0x7efd49ed2a50, cd=cd@entry=0x5627c1e20d40) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#10 0x00007efd4d38e9c5 in vm_call_cfunc (ec=ec@entry=0x5627c1f4e1f0, reg_cfp=reg_cfp@entry=0x7efd49fd2c90, calling=calling@entry=0x7efd49ed2a50, cd=cd@entry=0x5627c1e20d40) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#11 0x00007efd4d3a8bfe in vm_call_method_each_type (ec=ec@entry=0x5627c1f4e1f0, cfp=cfp@entry=0x7efd49fd2c90, calling=0x7efd49ed2a50, cd=0x5627c1e20d40) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#12 0x00007efd4d3a9353 in vm_call_method (ec=0x5627c1f4e1f0, cfp=0x7efd49fd2c90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#13 0x00007efd4d3997e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#14 vm_exec_core (ec=0x5627c1f4e1f0, initial=128, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#15 0x00007efd4d39f88d in rb_vm_exec (ec=0x5627c1f4e1f0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#16 0x00007efd4d3a017f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5627c1f4e1f0, self=self@entry=139626332105424, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#17 0x00007efd4d3a1223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=1240280144, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=139626332105424, captured=0x5627c1f47f50, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#18 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=1240280304, argv=0x7efd49ed2c50, argc=&lt;optimized out&gt;, self=139626332105424, proc=0x5627c10ebf20, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#19 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5627c10ebf20, self=139626332105424, argc=argc@entry=1240280144, argv=argv@entry=0x7efd49ed2cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#20 0x00007efd4d3a259d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5627c10ebf20, argc=argc@entry=1240280144, argv=argv@entry=0x7efd49ed2cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#21 0x00007efd4d35b0bd in thread_do_start_proc (th=0x5627c1f47f50) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0x7efd4aa1e700 (LWP 1818)):
#0  0x00007efd4ce27bf9 in __GI___poll (fds=fds@entry=0x7efd4a91d660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007efd4d20c108 in poll (__timeout=-1, __nfds=1, __fds=0x7efd4a91d660) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=7, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7efd4a91d8c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007efd4d35cfe1 in rb_thread_io_blocking_region (func=0x7efd4d20c040 &lt;internal_read_func&gt;, data1=0x7efd4a91d8c0, fd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007efd4d1d6184 in rb_ensure (b_proc=b_proc@entry=0x7efd4d20a0a0 &lt;read_internal_call&gt;, data1=data1@entry=139626342897856, e_proc=e_proc@entry=0x7efd4d32d930 &lt;rb_str_unlocktmp&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#6  0x00007efd4d33ed6b in rb_str_locktmp_ensure (str=&lt;optimized out&gt;, func=func@entry=0x7efd4d20a0a0 &lt;read_internal_call&gt;, arg=arg@entry=139626342897856) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;string.c:2781
#7  0x00007efd4d220630 in read_internal_locktmp (iis=0x7efd4a91d8c0, str=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2953
#8  io_getpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;, no_exception=no_exception@entry=8, nonblock=nonblock@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2995
#9  0x00007efd4d220b01 in io_readpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3088
#10 0x00007efd4d38e735 in vm_call_cfunc_with_frame (ec=0x5627c1eda470, reg_cfp=0x7efd4aa1dc90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#11 0x00007efd4d3997e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#12 vm_exec_core (ec=0x5627c1eda470, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#13 0x00007efd4d39f88d in rb_vm_exec (ec=0x5627c1eda470, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#14 0x00007efd4d3a017f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5627c1eda470, self=self@entry=139626342898384, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#15 0x00007efd4d3a1223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=1251073104, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=139626342898384, captured=0x5627c20675c0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#16 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=1251073264, argv=0x7efd4a91dc50, argc=&lt;optimized out&gt;, self=139626342898384, proc=0x5627c1b14588, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#17 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5627c1b14588, self=139626342898384, argc=argc@entry=1251073104, argv=argv@entry=0x7efd4a91dcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#18 0x00007efd4d3a259d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5627c1b14588, argc=argc@entry=1251073104, argv=argv@entry=0x7efd4a91dcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#19 0x00007efd4d35b0bd in thread_do_start_proc (th=0x5627c20675c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0x7efd4d8f2d80 (LWP 1812)):
#0  0x00007efd4ce27cf6 in __GI_ppoll (fds=fds@entry=0x7ffcbf681b18, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007efd4d358bb7 in rb_sigwait_sleep (th=th@entry=0x5627c10b4f50, sigwait_fd=sigwait_fd@entry=3, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2014
#2  0x00007efd4d359794 in native_sleep (th=th@entry=0x5627c10b4f50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2135
#3  0x00007efd4d35dec5 in thread_join_sleep (arg=arg@entry=140723519757568) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1152
#4  0x00007efd4d1d6184 in rb_ensure (b_proc=b_proc@entry=0x7efd4d35dda0 &lt;thread_join_sleep&gt;, data1=data1@entry=140723519757568, e_proc=e_proc@entry=0x7efd4d352fe0 &lt;remove_from_join_list&gt;, data2=data2@entry=140723519757568) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#5  0x00007efd4d354658 in thread_join (target_th=target_th@entry=0x5627c1f47f50, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1197
#6  0x00007efd4d3546fa in thread_value (self=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1315
#7  0x00007efd4d38e735 in vm_call_cfunc_with_frame (ec=0x5627c10b55b0, reg_cfp=0x7efd4d8f0c58, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#8  0x00007efd4d3997e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#9  vm_exec_core (ec=0x5627c10b55b0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#10 0x00007efd4d39f88d in rb_vm_exec (ec=ec@entry=0x5627c10b55b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#11 0x00007efd4d3a017f in invoke_block (ec=ec@entry=0x5627c10b55b0, iseq=iseq@entry=0x5627c10cbb80, self=self@entry=94728745966960, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#12 0x00007efd4d3a1963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffcbf682060, argc=1, self=94728745966960, captured=&lt;optimized out&gt;, ec=0x5627c10b55b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#13 invoke_block_from_c_bh (ec=0x5627c10b55b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffcbf6820c0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#14 0x00007efd4d3a1c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffcbf6820c0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#15 rb_yield_0 (argv=0x7ffcbf6820c0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#16 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#17 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#18 0x00007efd4d141ebc in rb_ary_collect (ary=94728753311960) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#19 0x00007efd4d38e735 in vm_call_cfunc_with_frame (ec=0x5627c10b55b0, reg_cfp=0x7efd4d8f0de0, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#20 0x00007efd4d3998ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#21 vm_exec_core (ec=0x5627c10b55b0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#22 0x00007efd4d39f88d in rb_vm_exec (ec=ec@entry=0x5627c10b55b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#23 0x00007efd4d3a017f in invoke_block (ec=ec@entry=0x5627c10b55b0, iseq=iseq@entry=0x5627c10f1218, self=self@entry=94728745966960, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#24 0x00007efd4d3a1963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffcbf682450, argc=1, self=94728745966960, captured=&lt;optimized out&gt;, ec=0x5627c10b55b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#25 invoke_block_from_c_bh (ec=0x5627c10b55b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffcbf6824b0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#26 0x00007efd4d3a1c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffcbf6824b0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#27 rb_yield_0 (argv=0x7ffcbf6824b0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#28 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#29 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#30 0x00007efd4d141ebc in rb_ary_collect (ary=94728753334360) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#31 0x00007efd4d38e735 in vm_call_cfunc_with_frame (ec=0x5627c10b55b0, reg_cfp=0x7efd4d8f0f30, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#32 0x00007efd4d3998ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#33 vm_exec_core (ec=0x5627c10b55b0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#34 0x00007efd4d3a0015 in rb_vm_exec (ec=0x5627c10b55b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#35 0x00007efd4d3aa9c0 in rb_iseq_eval_main (iseq=iseq@entry=0x5627c10f18a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:2239
#36 0x00007efd4d1d25ba in rb_ec_exec_node (ec=ec@entry=0x5627c10b55b0, n=n@entry=0x5627c10f18a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:297
#37 0x00007efd4d1d8838 in ruby_run_node (n=0x5627c10f18a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:355
#38 0x00005627bf906a1f in main (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;main.c:50
&gt;&gt;&gt; Dump Ruby level backtrace
th: 0x5627c10b4f50, native_id: 0x7efd4d8f2d80
-- Control frame information -----------------------------------------------
c:0018 p:---- s:0124 e:000123 CFUNC  :value
  me:
    called_id: value, type: cfunc
    owner class: 0x00005627c1129690 [3LM   ] T_CLASS Thread
  self: 0x00005627c10f9f80 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
c:0017 p:0023 s:0120 e:000118 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;core_assertions.rb:588
  me:
    called_id: assert_join_threads, type: iseq
    owner class: 0x00005627c13a9cf8 [3LM   ] T_MODULE (Module)Test::Unit::CoreAssertions
    defined_class: 0x00005627c1102a90 [3LM R ] T_ICLASS src:Test::Unit::CoreAssertions
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
  lvars:
    threads: 0x00005627c12a4e98 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
    message: T_NIL
    errs: 0x00005627c124a998 [0     ] T_ARRAY (Array)[E ] len: 0 (embed)
    values: 0x00005627c1248bc0 [0     ] T_ARRAY (Array)[E ] len: 0 (embed)
    th: 0x00005627c10f9f80 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    msg: T_NIL
c:0016 p:0063 s:0109 E:001a88 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;monitor&#x2F;test_monitor.rb:223
  me:
    called_id: test_cond, type: iseq
    owner class: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
  lvars:
    cond: 0x00005627c1b0c1a8 [0     ] T_OBJECT (MonitorMixin::ConditionVariable)(embed) len:3
    a: 0x00005627c1b0c068 [0     ] T_STRING (String)foo
    queue1: 0x00005627c10c8e08 [0     ] queue (Thread::Queue)queue
    th: 0x00005627c10f9f80 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    th2: 0x00005627c1108378 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
c:0015 p:0052 s:0100 e:000099 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1231
  me:
    called_id: run_test, type: iseq
    owner class: 0x00005627c1306a30 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
  lvars:
    name: 0x00005627c1b0f2e0 [0     ] T_STRING (String)test_cond
    progname: 0x00005627c11127b0 [3LM   ] T_STRING (String)&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb
c:0014 p:0065 s:0094 e:000093 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1320
  me:
    called_id: run, type: iseq
    owner class: 0x00005627c1306a30 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
  lvars:
    runner: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
    start_time: 0x00005627c1b0cb80 [0    U] time (Time)time
    result: 0x00005627c1108b20 [3LM   ] T_STRING (String)
    time: T_NIL
    e: T_NIL
c:0013 p:0013 s:0085 e:000084 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;testcase.rb:18
  me:
    called_id: run, type: iseq
    owner class: 0x00005627c1102ce8 [3LM   ] T_CLASS Test::Unit::TestCase
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
  lvars:
    runner: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
c:0012 p:0077 s:0080 e:000079 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:969 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005627c1307c78 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    method: 0x00005627c1b0f2e0 [0     ] T_STRING (String)test_cond
    inst: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
    start_time: T_NIL
    result: T_NIL
c:0011 p:---- s:0073 e:000072 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x00005627c1151c58 [3LM   ] T_CLASS Array
  self: 0x00005627c1b0f0d8 [0     ] T_ARRAY (Array)[   ] len: 13, capa:20 ptr:0x00005627c2046db0
c:0010 p:0006 s:0069 e:000068 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:962
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005627c1307c78 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    assertions: T_NIL
c:0009 p:0163 s:0065 E:000c00 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:989
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005627c1307c78 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    suite: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
    type: T_SYMBOL test
    header: 0x00005627c1b0fe20 [0     ] T_STRING (String)test_suite_header
    filter: 0x00005627c1562ab8 [3LM   ] T_REGEXP 
    all_test_methods: 0x00005627c1b0f150 [0     ] T_ARRAY (Array)[   ] len: 13, capa:13 ptr:0x00005627c202f840
    filtered_test_methods: 0x00005627c1b0f0d8 [0     ] T_ARRAY (Array)[   ] len: 13, capa:20 ptr:0x00005627c2046db0
    leakchecker: 0x00005627c1b0ede0 [0     ] T_OBJECT (LeakChecker)len:7 ptr:0x00005627c170ff50
    continuation: 0x00005627c1b0cce8 [0     ] proc (Proc) block in _run_suite@&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:961
c:0008 p:0042 s:0053 e:000052 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1084
  me:
    called_id: orig_run_suite, type: iseq
    owner class: 0x00005627c10f85e0 [3LM   ] T_MODULE (Module)Test::Unit::ExcludesOption
    defined_class: 0x00005627c10f1ba0 [3LM   ] T_ICLASS src:Test::Unit::ExcludesOption
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    suite: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
    type: T_SYMBOL test
    ex: T_NIL
c:0007 p:0103 s:0046 E:0016c0 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:55
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005627c14cf3d0 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    suite: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
    type: T_SYMBOL test
    orig_testout: 0x00005627c1141a10 [0LM  U] T_FILE (IO)
    i: 0x00005627c1b14678 [0    U] T_FILE (IO)
    o: 0x00005627c1b14650 [0    U] T_FILE (IO)
    orig_stdin: 0x00005627c1141a60 [0LM  U] T_FILE (IO)
    orig_stdout: 0x00005627c1141a10 [0LM  U] T_FILE (IO)
    th: 0x00005627c1b145d8 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    e: T_FIXNUM 0
    f: T_FIXNUM 0
    s: T_FIXNUM 0
    result: T_NIL
c:0006 p:0008 s:0030 e:000029 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:31 [FINISH]
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x00005627c14cf3d0 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    suite: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
c:0005 p:---- s:0026 e:000025 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x00005627c1151c58 [3LM   ] T_CLASS Array
  self: 0x00005627c1b14858 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
c:0004 p:0005 s:0022 e:000021 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:30
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x00005627c14cf3d0 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    suites: 0x00005627c1b14858 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
    type: T_SYMBOL test
c:0003 p:0259 s:0016 e:000015 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:125
  me:
    called_id: run, type: iseq
    owner class: 0x00005627c14cf3d0 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    args: 0x00005627c1140e58 [3LM   ] T_ARRAY [E ] len: 0 (embed)
    buf: 0x00005627c1b80a58 [0     ] T_STRING (String)run &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;monitor&#x2F;test_monitor.rb test

    suites: 0x00005627c1b80828 [0     ] T_ARRAY (Array)[   ] len: 113, capa:113 ptr:0x00005627c2020aa0
    e: T_NIL
    trace: T_NIL
    err: T_NIL
c:0002 p:0142 s:0006 e:000005 EVAL   &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:205 [FINISH]
  self: 0x00005627c1170450 [3LM   ] T_OBJECT (embed) len:3
c:0001 p:0000 s:0003 E:0016d0 (none) [FINISH]
  self: 0x00005627c1170450 [3LM   ] T_OBJECT (embed) len:3

th: 0x5627c20675c0, native_id: 0x7efd4aa1e700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0012 e:000011 CFUNC  :readpartial
  me:
    called_id: readpartial, type: cfunc
    owner class: 0x00005627c11437c0 [3LM   ] T_CLASS IO
  self: 0x00005627c1b14678 [0    U] T_FILE (IO)
c:0002 p:0036 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:45 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005627c14cf3d0 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005627c140dd70 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005627c1666f20
  lvars:
    buf: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x5627c1f47f50, native_id: 0x7efd49fd3700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0010 e:000009 CFUNC  :pop
  me:
    called_id: deq, type: cfunc
    owner class: 0x00005627c1121530 [3LM R ] T_CLASS Thread::Queue
  self: 0x00005627c10c8e08 [0     ] queue (Thread::Queue)queue
c:0002 p:0005 s:0006 e:000005 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;monitor&#x2F;test_monitor.rb:208 [FINISH]
  me:
    called_id: test_cond, type: iseq
    owner class: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x5627c1e6e4a0, native_id: 0x7efd35207700
-- Control frame information -----------------------------------------------
c:0008 p:---- s:0031 e:000030 CFUNC  :sleep
  me:
    called_id: sleep, type: cfunc
    owner class: 0x00005627c1121800 [3LM   ] T_CLASS Thread::Mutex
  self: 0x00005627c1b0c950 [0    U] mutex (Thread::Mutex)mutex
c:0007 p:---- s:0028 e:000027 CFUNC  :wait
  me:
    called_id: wait, type: cfunc
    owner class: 0x00005627c1120dd8 [3LM   ] T_CLASS Thread::ConditionVariable
  self: 0x00005627c1b0c090 [0     ] condvar (Thread::ConditionVariable)condvar
c:0006 p:---- s:0025 e:000024 CFUNC  :wait_for_cond
  me:
    called_id: wait_for_cond, type: cfunc
    owner class: 0x00005627c1429570 [3LM R ] T_CLASS Monitor
  self: 0x00005627c1b0c978 [0     ] monitor (Monitor)monitor
c:0005 p:0019 s:0019 e:000018 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;build&#x2F;trunk-no-theap&#x2F;.ext&#x2F;common&#x2F;monitor.rb:108
  me:
    called_id: wait, type: iseq
    owner class: 0x00005627c1428e40 [3LM R ] T_CLASS MonitorMixin::ConditionVariable
  self: 0x00005627c1b0c1a8 [0     ] T_OBJECT (MonitorMixin::ConditionVariable)(embed) len:3
  lvars:
    timeout: T_NIL
c:0004 p:0022 s:0014 e:000013 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;monitor&#x2F;test_monitor.rb:218 [FINISH]
  me:
    called_id: test_cond, type: iseq
    owner class: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
  lvars:
    result1: T_NIL
c:0003 p:---- s:0010 e:000009 CFUNC  :synchronize
  me:
    called_id: synchronize, type: cfunc
    owner class: 0x00005627c1429570 [3LM R ] T_CLASS Monitor
  self: 0x00005627c1b0c978 [0     ] monitor (Monitor)monitor
c:0002 p:0007 s:0006 e:000005 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;monitor&#x2F;test_monitor.rb:215 [FINISH]
  me:
    called_id: test_cond, type: iseq
    owner class: 0x00005627c1b15a50 [2     ] T_CLASS TestMonitor
  self: 0x00005627c1b0cc20 [0     ] T_OBJECT (TestMonitor)len:10 ptr:0x00005627c1f685c0
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

$1 = 0
&quot;&gt;&gt;&gt; Finish
&quot;
[nil, 1812]
&quot;gdb -p 1813 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
running file: &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;monitor&#x2F;test_monitor.rb

Some worker was crashed. It seems ruby interpreter&#x27;s bug
or, a bug of test&#x2F;unit&#x2F;parallel.rb. try again without -j
option.

1812:running:test_monitor: Broken pipe
[New LWP 1821]
[New LWP 1830]
[Thread debugging using libthread_db enabled]
Using host libthread_db library &quot;&#x2F;lib&#x2F;x86_64-linux-gnu&#x2F;libthread_db.so.1&quot;.
0x00007ffb179ebcf6 in __GI_ppoll (fds=fds@entry=0x7ffc63023640, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
39	..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c: No such file or directory.
&gt;&gt;&gt; Threads  Id   Target Id         Frame 
* 1    Thread 0x7ffb184b6d80 (LWP 1813) &quot;ruby&quot; 0x00007ffb179ebcf6 in __GI_ppoll (fds=fds@entry=0x7ffc63023640, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
  2    Thread 0x7ffb153e0700 (LWP 1821) &quot;parallel.rb:43&quot; 0x00007ffb179ebbf9 in __GI___poll (fds=fds@entry=0x7ffb152df660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
  3    Thread 0x7ffb150ba700 (LWP 1830) &quot;extservm.rb:63&quot; 0x00007ffb179ebcf6 in __GI_ppoll (fds=fds@entry=0x7ffb14fb95d8, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
&gt;&gt;&gt; Machine level backtrace

Thread 3 (Thread 0x7ffb150ba700 (LWP 1830)):
#0  0x00007ffb179ebcf6 in __GI_ppoll (fds=fds@entry=0x7ffb14fb95d8, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007ffb17f1cbb7 in rb_sigwait_sleep (th=th@entry=0x557503678010, sigwait_fd=sigwait_fd@entry=3, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2014
#2  0x00007ffb17f1d794 in native_sleep (th=&lt;optimized out&gt;, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2135
#3  0x00007ffb17f21d13 in queue_sleep () at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.h:93
#4  0x00007ffb17d9a184 in rb_ensure (b_proc=b_proc@entry=0x7ffb17f21c60 &lt;queue_sleep&gt;, data1=data1@entry=93961052451360, e_proc=e_proc@entry=0x7ffb17f16f70 &lt;queue_sleep_done&gt;, data2=data2@entry=140716365551504) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#5  0x00007ffb17f18e03 in queue_do_pop (self=93961052451360, q=0x557503281670, should_block=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:969
#6  0x00007ffb17f52735 in vm_call_cfunc_with_frame (ec=ec@entry=0x5575035b0380, reg_cfp=reg_cfp@entry=0x7ffb150b9c90, calling=calling@entry=0x7ffb14fb9a50, cd=cd@entry=0x557503791d70) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#7  0x00007ffb17f529c5 in vm_call_cfunc (ec=ec@entry=0x5575035b0380, reg_cfp=reg_cfp@entry=0x7ffb150b9c90, calling=calling@entry=0x7ffb14fb9a50, cd=cd@entry=0x557503791d70) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#8  0x00007ffb17f6cbfe in vm_call_method_each_type (ec=ec@entry=0x5575035b0380, cfp=cfp@entry=0x7ffb150b9c90, calling=0x7ffb14fb9a50, cd=0x557503791d70) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#9  0x00007ffb17f6d353 in vm_call_method (ec=0x5575035b0380, cfp=0x7ffb150b9c90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#10 0x00007ffb17f5d7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#11 vm_exec_core (ec=0x5575035b0380, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#12 0x00007ffb17f6388d in rb_vm_exec (ec=0x5575035b0380, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#13 0x00007ffb17f6417f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5575035b0380, self=self@entry=140716365552336, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#14 0x00007ffb17f65223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=352033872, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140716365552336, captured=0x557503678010, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#15 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=352034032, argv=0x7ffb14fb9c50, argc=&lt;optimized out&gt;, self=140716365552336, proc=0x557503277a68, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#16 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x557503277a68, self=140716365552336, argc=argc@entry=352033872, argv=argv@entry=0x7ffb14fb9cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#17 0x00007ffb17f6659d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x557503277a68, argc=argc@entry=352033872, argv=argv@entry=0x7ffb14fb9cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#18 0x00007ffb17f1f0bd in thread_do_start_proc (th=0x557503678010) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0x7ffb153e0700 (LWP 1821)):
#0  0x00007ffb179ebbf9 in __GI___poll (fds=fds@entry=0x7ffb152df660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007ffb17dd0108 in poll (__timeout=-1, __nfds=1, __fds=0x7ffb152df660) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=5, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7ffb152df8c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007ffb17f20fe1 in rb_thread_io_blocking_region (func=0x7ffb17dd0040 &lt;internal_read_func&gt;, data1=0x7ffb152df8c0, fd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007ffb17d9a184 in rb_ensure (b_proc=b_proc@entry=0x7ffb17dce0a0 &lt;read_internal_call&gt;, data1=data1@entry=140716368853184, e_proc=e_proc@entry=0x7ffb17ef1930 &lt;rb_str_unlocktmp&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#6  0x00007ffb17f02d6b in rb_str_locktmp_ensure (str=&lt;optimized out&gt;, func=func@entry=0x7ffb17dce0a0 &lt;read_internal_call&gt;, arg=arg@entry=140716368853184) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;string.c:2781
#7  0x00007ffb17de4630 in read_internal_locktmp (iis=0x7ffb152df8c0, str=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2953
#8  io_getpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;, no_exception=no_exception@entry=8, nonblock=nonblock@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2995
#9  0x00007ffb17de4b01 in io_readpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3088
#10 0x00007ffb17f52735 in vm_call_cfunc_with_frame (ec=0x5575036c5f10, reg_cfp=0x7ffb153dfc90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#11 0x00007ffb17f5d7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#12 vm_exec_core (ec=0x5575036c5f10, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#13 0x00007ffb17f6388d in rb_vm_exec (ec=0x5575036c5f10, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#14 0x00007ffb17f6417f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5575036c5f10, self=self@entry=140716368853712, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#15 0x00007ffb17f65223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=355335248, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140716368853712, captured=0x5575037909a0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#16 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=355335408, argv=0x7ffb152dfc50, argc=&lt;optimized out&gt;, self=140716368853712, proc=0x5575036c9378, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#17 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5575036c9378, self=140716368853712, argc=argc@entry=355335248, argv=argv@entry=0x7ffb152dfcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#18 0x00007ffb17f6659d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5575036c9378, argc=argc@entry=355335248, argv=argv@entry=0x7ffb152dfcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#19 0x00007ffb17f1f0bd in thread_do_start_proc (th=0x5575037909a0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0x7ffb184b6d80 (LWP 1813)):
#0  0x00007ffb179ebcf6 in __GI_ppoll (fds=fds@entry=0x7ffc63023640, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007ffb17f1c850 in native_ppoll_sleep (th=0x55750306ef50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2106
#2  0x00007ffb17f1d895 in native_sleep (th=th@entry=0x55750306ef50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2146
#3  0x00007ffb17f21ec5 in thread_join_sleep (arg=arg@entry=140721969575936) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1152
#4  0x00007ffb17d9a184 in rb_ensure (b_proc=b_proc@entry=0x7ffb17f21da0 &lt;thread_join_sleep&gt;, data1=data1@entry=140721969575936, e_proc=e_proc@entry=0x7ffb17f16fe0 &lt;remove_from_join_list&gt;, data2=data2@entry=140721969575936) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#5  0x00007ffb17f18658 in thread_join (target_th=0x557503678010, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1197
#6  0x00007ffb17f1878c in thread_join_m (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, self=93961052454320) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1294
#7  0x00007ffb17f52735 in vm_call_cfunc_with_frame (ec=0x55750306f5b0, reg_cfp=0x7ffb184b4c20, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#8  0x00007ffb17f5d7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#9  vm_exec_core (ec=0x55750306f5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#10 0x00007ffb17f6388d in rb_vm_exec (ec=ec@entry=0x55750306f5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#11 0x00007ffb17f6417f in invoke_block (ec=ec@entry=0x55750306f5b0, iseq=iseq@entry=0x557503081470, self=self@entry=93961050427640, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#12 0x00007ffb17f65963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc63023b80, argc=1, self=93961050427640, captured=&lt;optimized out&gt;, ec=0x55750306f5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#13 invoke_block_from_c_bh (ec=0x55750306f5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc63023be0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#14 0x00007ffb17f65c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc63023be0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#15 rb_yield_0 (argv=0x7ffc63023be0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#16 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#17 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#18 0x00007ffb17d007ec in rb_ary_each (ary=93961052959440) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:2379
#19 0x00007ffb17f52735 in vm_call_cfunc_with_frame (ec=0x55750306f5b0, reg_cfp=0x7ffb184b4d00, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#20 0x00007ffb17f5d8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#21 vm_exec_core (ec=0x55750306f5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#22 0x00007ffb17f64015 in rb_vm_exec (ec=ec@entry=0x55750306f5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#23 0x00007ffb17f6417f in invoke_block (ec=ec@entry=0x55750306f5b0, iseq=iseq@entry=0x557503083b30, self=self@entry=93961053838000, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#24 0x00007ffb17f65963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc63023f60, argc=1, self=93961053838000, captured=&lt;optimized out&gt;, ec=0x55750306f5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#25 invoke_block_from_c_bh (ec=0x55750306f5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc63023fc0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#26 0x00007ffb17f65c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc63023fc0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#27 rb_yield_0 (argv=0x7ffc63023fc0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#28 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#29 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#30 0x00007ffb17d05ebc in rb_ary_collect (ary=93961056980200) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#31 0x00007ffb17f52735 in vm_call_cfunc_with_frame (ec=0x55750306f5b0, reg_cfp=0x7ffb184b4de0, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#32 0x00007ffb17f5d8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#33 vm_exec_core (ec=0x55750306f5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#34 0x00007ffb17f6388d in rb_vm_exec (ec=ec@entry=0x55750306f5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#35 0x00007ffb17f6417f in invoke_block (ec=ec@entry=0x55750306f5b0, iseq=iseq@entry=0x5575030a9218, self=self@entry=93961053838000, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#36 0x00007ffb17f65963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc63024350, argc=1, self=93961053838000, captured=&lt;optimized out&gt;, ec=0x55750306f5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#37 invoke_block_from_c_bh (ec=0x55750306f5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc630243b0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#38 0x00007ffb17f65c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc630243b0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#39 rb_yield_0 (argv=0x7ffc630243b0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#40 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#41 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#42 0x00007ffb17d05ebc in rb_ary_collect (ary=93961056982280) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#43 0x00007ffb17f52735 in vm_call_cfunc_with_frame (ec=0x55750306f5b0, reg_cfp=0x7ffb184b4f30, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#44 0x00007ffb17f5d8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#45 vm_exec_core (ec=0x55750306f5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#46 0x00007ffb17f64015 in rb_vm_exec (ec=0x55750306f5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#47 0x00007ffb17f6e9c0 in rb_iseq_eval_main (iseq=iseq@entry=0x5575030a98a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:2239
#48 0x00007ffb17d965ba in rb_ec_exec_node (ec=ec@entry=0x55750306f5b0, n=n@entry=0x5575030a98a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:297
#49 0x00007ffb17d9c838 in ruby_run_node (n=0x5575030a98a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:355
#50 0x0000557502356a1f in main (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;main.c:50
&gt;&gt;&gt; Dump Ruby level backtrace
th: 0x55750306ef50, native_id: 0x7ffb184b6d80
-- Control frame information -----------------------------------------------
c:0019 p:---- s:0115 e:000114 CFUNC  :join
  me:
    called_id: join, type: cfunc
    owner class: 0x00005575030e1690 [3LM R ] T_CLASS Thread
  self: 0x0000557503277db0 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
c:0018 p:0046 s:0111 e:000110 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;drbtest.rb:45
  me:
    called_id: finish, type: iseq
    owner class: 0x00005575036dae48 [2     ] T_CLASS DRbTests::DRbService
  self: 0x00005575030c0b48 [0     ] T_OBJECT (DRbTests::DRbUNIXService)(embed) len:3
c:0017 p:0107 s:0107 e:000106 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;drbtest.rb:117
  me:
    called_id: teardown, type: iseq
    owner class: 0x00005575036d9ef8 [2     ] T_MODULE (Module)DRbTests::DRbBase
    defined_class: 0x00005575036c96c0 [2     ] T_ICLASS src:DRbTests::DRbBase
  self: 0x00005575030890f8 [0     ] T_OBJECT (DRbTests::TestDRbUNIXAry)len:10 ptr:0x0000557503693e10
  lvars:
    signal: T_SYMBOL TERM
c:0016 p:0006 s:0102 e:000101 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1335 [FINISH]
  me:
    called_id: run, type: iseq
    owner class: 0x00005575032be9e0 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005575030890f8 [0     ] T_OBJECT (DRbTests::TestDRbUNIXAry)len:10 ptr:0x0000557503693e10
  lvars:
    hook: 0x00005575030815d8 [3LM   ] T_STRING (String)teardown
c:0015 p:---- s:0098 e:000097 CFUNC  :each
  me:
    called_id: each, type: cfunc
    owner class: 0x0000557503109c58 [3LM R ] T_CLASS Array
  self: 0x00005575032f32d0 [0     ] T_ARRAY (Array)[E ] len: 3 (embed)
c:0014 p:0122 s:0094 e:000093 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1333
  me:
    called_id: run, type: iseq
    owner class: 0x00005575032be9e0 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005575030890f8 [0     ] T_OBJECT (DRbTests::TestDRbUNIXAry)len:10 ptr:0x0000557503693e10
  lvars:
    runner: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
    start_time: 0x00005575030982d8 [0    U] time (Time)time
    result: 0x00005575032f3320 [0     ] T_STRING (String)E
    time: T_FLOAT
    e: 0x00005575032b2348 [0     ] T_OBJECT (RuntimeError)len:5 ptr:0x000055750345d2d0
c:0013 p:0013 s:0085 e:000084 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;testcase.rb:18
  me:
    called_id: run, type: iseq
    owner class: 0x00005575030babf8 [3LM   ] T_CLASS Test::Unit::TestCase
  self: 0x00005575030890f8 [0     ] T_OBJECT (DRbTests::TestDRbUNIXAry)len:10 ptr:0x0000557503693e10
  lvars:
    runner: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
c:0012 p:0077 s:0080 e:000079 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:969 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005575032bfc28 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    method: 0x00005575036c8db0 [0     ] T_STRING (String)test_01
    inst: 0x00005575030890f8 [0     ] T_OBJECT (DRbTests::TestDRbUNIXAry)len:10 ptr:0x0000557503693e10
    start_time: T_NIL
    result: T_NIL
c:0011 p:---- s:0073 e:000072 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x0000557503109c58 [3LM R ] T_CLASS Array
  self: 0x00005575036c8ce8 [0     ] T_ARRAY (Array)[   ] len: 6, capa:20 ptr:0x00005575036ce750
c:0010 p:0006 s:0069 e:000068 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:962
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005575032bfc28 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    assertions: T_NIL
c:0009 p:0163 s:0065 E:001f70 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:989
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005575032bfc28 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    suite: 0x00005575036c97b0 [2     ] T_CLASS DRbTests::TestDRbUNIXAry
    type: T_SYMBOL test
    header: 0x00005575036c9080 [0     ] T_STRING (String)test_suite_header
    filter: 0x000055750351e820 [3LM   ] T_REGEXP 
    all_test_methods: 0x00005575036c8d38 [0     ] T_ARRAY (Array)[   ] len: 6, capa:6 ptr:0x000055750378cec0
    filtered_test_methods: 0x00005575036c8ce8 [0     ] T_ARRAY (Array)[   ] len: 6, capa:20 ptr:0x00005575036ce750
    leakchecker: 0x00005575036c8b30 [0     ] T_OBJECT (LeakChecker)len:7 ptr:0x00005575036bd800
    continuation: 0x0000557503081d80 [0     ] proc (Proc) block in _run_suite@&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:961
c:0008 p:0042 s:0053 e:000052 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1084
  me:
    called_id: orig_run_suite, type: iseq
    owner class: 0x00005575030b02e8 [3LM   ] T_MODULE (Module)Test::Unit::ExcludesOption
    defined_class: 0x00005575030a9ba0 [3LM   ] T_ICLASS src:Test::Unit::ExcludesOption
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    suite: 0x00005575036c97b0 [2     ] T_CLASS DRbTests::TestDRbUNIXAry
    type: T_SYMBOL test
    ex: T_NIL
c:0007 p:0103 s:0046 E:0013c0 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:55
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x0000557503487448 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    suite: 0x00005575036c97b0 [2     ] T_CLASS DRbTests::TestDRbUNIXAry
    type: T_SYMBOL test
    orig_testout: 0x00005575030f9a10 [0LM  U] T_FILE (IO)
    i: 0x00005575036c9418 [0    U] T_FILE (IO)
    o: 0x00005575036c93f0 [0    U] T_FILE (IO)
    orig_stdin: 0x00005575030f9a60 [0LM  U] T_FILE (IO)
    orig_stdout: 0x00005575030f9a10 [0LM  U] T_FILE (IO)
    th: 0x00005575036c93a0 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    e: T_FIXNUM 0
    f: T_FIXNUM 0
    s: T_FIXNUM 3
    result: T_NIL
c:0006 p:0008 s:0030 e:000029 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:31 [FINISH]
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x0000557503487448 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    suite: 0x00005575036c97b0 [2     ] T_CLASS DRbTests::TestDRbUNIXAry
c:0005 p:---- s:0026 e:000025 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x0000557503109c58 [3LM R ] T_CLASS Array
  self: 0x00005575036c9508 [0     ] T_ARRAY (Array)[E ] len: 2 (embed)
c:0004 p:0005 s:0022 e:000021 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:30
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x0000557503487448 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    suites: 0x00005575036c9508 [0     ] T_ARRAY (Array)[E ] len: 2 (embed)
    type: T_SYMBOL test
c:0003 p:0259 s:0016 e:000015 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:125
  me:
    called_id: run, type: iseq
    owner class: 0x0000557503487448 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    args: 0x00005575030f8e58 [3LM   ] T_ARRAY [E ] len: 0 (embed)
    buf: 0x0000557503715020 [1     ] T_STRING (String)run &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;test_drbunix.rb test

    suites: 0x0000557503714eb8 [1     ] T_ARRAY (Array)[   ] len: 11, capa:22 ptr:0x00005575036e4010
    e: T_NIL
    trace: T_NIL
    err: T_NIL
c:0002 p:0142 s:0006 e:000005 EVAL   &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:205 [FINISH]
  self: 0x0000557503128450 [3LM   ] T_OBJECT (embed) len:3
c:0001 p:0000 s:0003 E:002470 (none) [FINISH]
  self: 0x0000557503128450 [3LM   ] T_OBJECT (embed) len:3

th: 0x5575037909a0, native_id: 0x7ffb153e0700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0012 e:000011 CFUNC  :readpartial
  me:
    called_id: readpartial, type: cfunc
    owner class: 0x00005575030fb7c0 [3LM R ] T_CLASS IO
  self: 0x00005575036c9418 [0    U] T_FILE (IO)
c:0002 p:0036 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:45 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x0000557503487448 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005575033c9ab0 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005575035fdf50
  lvars:
    buf: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x557503678010, native_id: 0x7ffb150ba700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0011 e:000010 CFUNC  :pop
  me:
    called_id: pop, type: cfunc
    owner class: 0x00005575030d9530 [3LM R ] T_CLASS Thread::Queue
  self: 0x0000557503277220 [0     ] queue (Thread::Queue)queue
c:0002 p:0024 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;drb&#x2F;extservm.rb:64 [FINISH]
  me:
    called_id: invoke_thread, type: iseq
    owner class: 0x00005575036e0118 [2     ] T_CLASS DRb::ExtServManager
  self: 0x00005575030ead58 [0     ] T_OBJECT (DRb::ExtServManager)len:10 ptr:0x0000557503616420
  lvars:
    name: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

$1 = 0
&quot;&gt;&gt;&gt; Finish
&quot;
[nil, 1813]
&quot;gdb -p 1814 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
[New LWP 1823]
[New LWP 1832]
[Thread debugging using libthread_db enabled]
Using host libthread_db library &quot;&#x2F;lib&#x2F;x86_64-linux-gnu&#x2F;libthread_db.so.1&quot;.
0x00007f9060a58cf6 in __GI_ppoll (fds=fds@entry=0x7ffc88395ce0, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
39	..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c: No such file or directory.
&gt;&gt;&gt; Threads  Id   Target Id         Frame 
* 1    Thread 0x7f9061523d80 (LWP 1814) &quot;ruby&quot; 0x00007f9060a58cf6 in __GI_ppoll (fds=fds@entry=0x7ffc88395ce0, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
  2    Thread 0x7f905e44a700 (LWP 1823) &quot;parallel.rb:43&quot; 0x00007f9060a58bf9 in __GI___poll (fds=fds@entry=0x7f905e349660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
  3    Thread 0x7f905e126700 (LWP 1832) &quot;extservm.rb:63&quot; 0x00007f9060a58cf6 in __GI_ppoll (fds=fds@entry=0x7f905e0255d8, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
&gt;&gt;&gt; Machine level backtrace

Thread 3 (Thread 0x7f905e126700 (LWP 1832)):
#0  0x00007f9060a58cf6 in __GI_ppoll (fds=fds@entry=0x7f905e0255d8, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007f9060f89bb7 in rb_sigwait_sleep (th=th@entry=0x555d8ecf2050, sigwait_fd=sigwait_fd@entry=3, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2014
#2  0x00007f9060f8a794 in native_sleep (th=&lt;optimized out&gt;, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2135
#3  0x00007f9060f8ed13 in queue_sleep () at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.h:93
#4  0x00007f9060e07184 in rb_ensure (b_proc=b_proc@entry=0x7f9060f8ec60 &lt;queue_sleep&gt;, data1=data1@entry=93860307703360, e_proc=e_proc@entry=0x7f9060f83f70 &lt;queue_sleep_done&gt;, data2=data2@entry=140258029229968) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#5  0x00007f9060f85e03 in queue_do_pop (self=93860307703360, q=0x555d8e4a8810, should_block=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:969
#6  0x00007f9060fbf735 in vm_call_cfunc_with_frame (ec=ec@entry=0x555d8ecf1730, reg_cfp=reg_cfp@entry=0x7f905e125c90, calling=calling@entry=0x7f905e025a50, cd=cd@entry=0x555d8ef47830) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#7  0x00007f9060fbf9c5 in vm_call_cfunc (ec=ec@entry=0x555d8ecf1730, reg_cfp=reg_cfp@entry=0x7f905e125c90, calling=calling@entry=0x7f905e025a50, cd=cd@entry=0x555d8ef47830) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#8  0x00007f9060fd9bfe in vm_call_method_each_type (ec=ec@entry=0x555d8ecf1730, cfp=cfp@entry=0x7f905e125c90, calling=0x7f905e025a50, cd=0x555d8ef47830) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#9  0x00007f9060fda353 in vm_call_method (ec=0x555d8ecf1730, cfp=0x7f905e125c90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#10 0x00007f9060fca7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#11 vm_exec_core (ec=0x555d8ecf1730, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#12 0x00007f9060fd088d in rb_vm_exec (ec=0x555d8ecf1730, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#13 0x00007f9060fd117f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x555d8ecf1730, self=self@entry=140258029230800, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#14 0x00007f9060fd2223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=1577213008, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140258029230800, captured=0x555d8ecf2050, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#15 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=1577213168, argv=0x7f905e025c50, argc=&lt;optimized out&gt;, self=140258029230800, proc=0x555d8e56abd0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#16 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x555d8e56abd0, self=140258029230800, argc=argc@entry=1577213008, argv=argv@entry=0x7f905e025cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#17 0x00007f9060fd359d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x555d8e56abd0, argc=argc@entry=1577213008, argv=argv@entry=0x7f905e025cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#18 0x00007f9060f8c0bd in thread_do_start_proc (th=0x555d8ecf2050) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0x7f905e44a700 (LWP 1823)):
#0  0x00007f9060a58bf9 in __GI___poll (fds=fds@entry=0x7f905e349660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007f9060e3d108 in poll (__timeout=-1, __nfds=1, __fds=0x7f905e349660) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=5, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7f905e3498c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007f9060f8dfe1 in rb_thread_io_blocking_region (func=0x7f9060e3d040 &lt;internal_read_func&gt;, data1=0x7f905e3498c0, fd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007f9060e07184 in rb_ensure (b_proc=b_proc@entry=0x7f9060e3b0a0 &lt;read_internal_call&gt;, data1=data1@entry=140258032523456, e_proc=e_proc@entry=0x7f9060f5e930 &lt;rb_str_unlocktmp&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#6  0x00007f9060f6fd6b in rb_str_locktmp_ensure (str=&lt;optimized out&gt;, func=func@entry=0x7f9060e3b0a0 &lt;read_internal_call&gt;, arg=arg@entry=140258032523456) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;string.c:2781
#7  0x00007f9060e51630 in read_internal_locktmp (iis=0x7f905e3498c0, str=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2953
#8  io_getpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;, no_exception=no_exception@entry=8, nonblock=nonblock@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2995
#9  0x00007f9060e51b01 in io_readpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3088
#10 0x00007f9060fbf735 in vm_call_cfunc_with_frame (ec=0x555d8ef4d620, reg_cfp=0x7f905e449c90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#11 0x00007f9060fca7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#12 vm_exec_core (ec=0x555d8ef4d620, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#13 0x00007f9060fd088d in rb_vm_exec (ec=0x555d8ef4d620, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#14 0x00007f9060fd117f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x555d8ef4d620, self=self@entry=140258032523984, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#15 0x00007f9060fd2223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=1580506192, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140258032523984, captured=0x555d8ef4d430, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#16 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=1580506352, argv=0x7f905e349c50, argc=&lt;optimized out&gt;, self=140258032523984, proc=0x555d8ebfbdf0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#17 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x555d8ebfbdf0, self=140258032523984, argc=argc@entry=1580506192, argv=argv@entry=0x7f905e349cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#18 0x00007f9060fd359d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x555d8ebfbdf0, argc=argc@entry=1580506192, argv=argv@entry=0x7f905e349cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#19 0x00007f9060f8c0bd in thread_do_start_proc (th=0x555d8ef4d430) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0x7f9061523d80 (LWP 1814)):
#0  0x00007f9060a58cf6 in __GI_ppoll (fds=fds@entry=0x7ffc88395ce0, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007f9060f89850 in native_ppoll_sleep (th=0x555d8e327f50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2106
#2  0x00007f9060f8a895 in native_sleep (th=th@entry=0x555d8e327f50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2146
#3  0x00007f9060f8eec5 in thread_join_sleep (arg=arg@entry=140722593947296) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1152
#4  0x00007f9060e07184 in rb_ensure (b_proc=b_proc@entry=0x7f9060f8eda0 &lt;thread_join_sleep&gt;, data1=data1@entry=140722593947296, e_proc=e_proc@entry=0x7f9060f83fe0 &lt;remove_from_join_list&gt;, data2=data2@entry=140722593947296) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#5  0x00007f9060f85658 in thread_join (target_th=0x555d8ecf2050, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1197
#6  0x00007f9060f8578c in thread_join_m (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, self=93860308364960) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1294
#7  0x00007f9060fbf735 in vm_call_cfunc_with_frame (ec=0x555d8e3285b0, reg_cfp=0x7f9061521c20, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#8  0x00007f9060fca7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#9  vm_exec_core (ec=0x555d8e3285b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#10 0x00007f9060fd088d in rb_vm_exec (ec=ec@entry=0x555d8e3285b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#11 0x00007f9060fd117f in invoke_block (ec=ec@entry=0x555d8e3285b0, iseq=iseq@entry=0x555d8e33d4e8, self=self@entry=93860315236760, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#12 0x00007f9060fd2963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc88396220, argc=1, self=93860315236760, captured=&lt;optimized out&gt;, ec=0x555d8e3285b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#13 invoke_block_from_c_bh (ec=0x555d8e3285b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc88396280, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#14 0x00007f9060fd2c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc88396280, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#15 rb_yield_0 (argv=0x7ffc88396280, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#16 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#17 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#18 0x00007f9060d6d7ec in rb_ary_each (ary=93860311204280) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:2379
#19 0x00007f9060fbf735 in vm_call_cfunc_with_frame (ec=0x555d8e3285b0, reg_cfp=0x7f9061521d00, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#20 0x00007f9060fca8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#21 vm_exec_core (ec=0x555d8e3285b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#22 0x00007f9060fd1015 in rb_vm_exec (ec=ec@entry=0x555d8e3285b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#23 0x00007f9060fd117f in invoke_block (ec=ec@entry=0x555d8e3285b0, iseq=iseq@entry=0x555d8e33fb80, self=self@entry=93860309507360, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#24 0x00007f9060fd2963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc88396600, argc=1, self=93860309507360, captured=&lt;optimized out&gt;, ec=0x555d8e3285b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#25 invoke_block_from_c_bh (ec=0x555d8e3285b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc88396660, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#26 0x00007f9060fd2c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc88396660, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#27 rb_yield_0 (argv=0x7ffc88396660, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#28 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#29 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#30 0x00007f9060d72ebc in rb_ary_collect (ary=93860315245720) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#31 0x00007f9060fbf735 in vm_call_cfunc_with_frame (ec=0x555d8e3285b0, reg_cfp=0x7f9061521de0, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#32 0x00007f9060fca8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#33 vm_exec_core (ec=0x555d8e3285b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#34 0x00007f9060fd088d in rb_vm_exec (ec=ec@entry=0x555d8e3285b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#35 0x00007f9060fd117f in invoke_block (ec=ec@entry=0x555d8e3285b0, iseq=iseq@entry=0x555d8e365218, self=self@entry=93860309507360, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#36 0x00007f9060fd2963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc883969f0, argc=1, self=93860309507360, captured=&lt;optimized out&gt;, ec=0x555d8e3285b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#37 invoke_block_from_c_bh (ec=0x555d8e3285b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc88396a50, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#38 0x00007f9060fd2c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc88396a50, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#39 rb_yield_0 (argv=0x7ffc88396a50, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#40 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#41 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#42 0x00007f9060d72ebc in rb_ary_collect (ary=93860315283720) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#43 0x00007f9060fbf735 in vm_call_cfunc_with_frame (ec=0x555d8e3285b0, reg_cfp=0x7f9061521f30, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#44 0x00007f9060fca8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#45 vm_exec_core (ec=0x555d8e3285b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#46 0x00007f9060fd1015 in rb_vm_exec (ec=0x555d8e3285b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#47 0x00007f9060fdb9c0 in rb_iseq_eval_main (iseq=iseq@entry=0x555d8e3658a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:2239
#48 0x00007f9060e035ba in rb_ec_exec_node (ec=ec@entry=0x555d8e3285b0, n=n@entry=0x555d8e3658a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:297
#49 0x00007f9060e09838 in ruby_run_node (n=0x555d8e3658a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:355
#50 0x0000555d8d29fa1f in main (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;main.c:50
&gt;&gt;&gt; Dump Ruby level backtrace
th: 0x555d8e327f50, native_id: 0x7f9061523d80
-- Control frame information -----------------------------------------------
c:0019 p:---- s:0115 e:000114 CFUNC  :join
  me:
    called_id: join, type: cfunc
    owner class: 0x0000555d8e39d690 [3LM R ] T_CLASS Thread
  self: 0x0000555d8e56aea0 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
c:0018 p:0046 s:0111 e:000110 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;drbtest.rb:45
  me:
    called_id: finish, type: iseq
    owner class: 0x0000555d8ec15930 [2     ] T_CLASS DRbTests::DRbService
  self: 0x0000555d8ebf8380 [0     ] T_OBJECT (DRbTests::DRbService)(embed) len:3
c:0017 p:0107 s:0107 e:000106 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;drbtest.rb:117
  me:
    called_id: teardown, type: iseq
    owner class: 0x0000555d8ec0f620 [2     ] T_MODULE (Module)DRbTests::DRbBase
    defined_class: 0x0000555d8ec04ba8 [2     ] T_ICLASS src:DRbTests::DRbBase
  self: 0x0000555d8ebf8998 [0     ] T_OBJECT (DRbTests::TestBug16634)len:10 ptr:0x0000555d8edb5940
  lvars:
    signal: T_SYMBOL TERM
c:0016 p:0006 s:0102 e:000101 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1335 [FINISH]
  me:
    called_id: run, type: iseq
    owner class: 0x0000555d8e576a20 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x0000555d8ebf8998 [0     ] T_OBJECT (DRbTests::TestBug16634)len:10 ptr:0x0000555d8edb5940
  lvars:
    hook: 0x0000555d8e33d600 [3LM   ] T_STRING (String)teardown
c:0015 p:---- s:0098 e:000097 CFUNC  :each
  me:
    called_id: each, type: cfunc
    owner class: 0x0000555d8e3c5c58 [3LM R ] T_CLASS Array
  self: 0x0000555d8e8201b8 [0     ] T_ARRAY (Array)[E ] len: 3 (embed)
c:0014 p:0122 s:0094 e:000093 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1333
  me:
    called_id: run, type: iseq
    owner class: 0x0000555d8e576a20 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x0000555d8ebf8998 [0     ] T_OBJECT (DRbTests::TestBug16634)len:10 ptr:0x0000555d8edb5940
  lvars:
    runner: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
    start_time: 0x0000555d8ebf8858 [0    U] time (Time)time
    result: 0x0000555d8e820320 [0     ] T_STRING (String)E
    time: T_FLOAT
    e: 0x0000555d8e721460 [0     ] T_OBJECT (RuntimeError)len:5 ptr:0x0000555d8e7872c0
c:0013 p:0013 s:0085 e:000084 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;testcase.rb:18
  me:
    called_id: run, type: iseq
    owner class: 0x0000555d8e376c98 [3LM   ] T_CLASS Test::Unit::TestCase
  self: 0x0000555d8ebf8998 [0     ] T_OBJECT (DRbTests::TestBug16634)len:10 ptr:0x0000555d8edb5940
  lvars:
    runner: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
c:0012 p:0077 s:0080 e:000079 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:969 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x0000555d8e577c68 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    method: 0x0000555d8ebfaf90 [0     ] T_STRING (String)test_bug16634
    inst: 0x0000555d8ebf8998 [0     ] T_OBJECT (DRbTests::TestBug16634)len:10 ptr:0x0000555d8edb5940
    start_time: T_NIL
    result: T_NIL
c:0011 p:---- s:0073 e:000072 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x0000555d8e3c5c58 [3LM R ] T_CLASS Array
  self: 0x0000555d8ebfac98 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
c:0010 p:0006 s:0069 e:000068 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:962
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x0000555d8e577c68 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    assertions: T_NIL
c:0009 p:0163 s:0065 E:000de0 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:989
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x0000555d8e577c68 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    suite: 0x0000555d8ec04d60 [2     ] T_CLASS DRbTests::TestBug16634
    type: T_SYMBOL test
    header: 0x0000555d8ebfb8a0 [0     ] T_STRING (String)test_suite_header
    filter: 0x0000555d8e7d6cc0 [3LM   ] T_REGEXP 
    all_test_methods: 0x0000555d8ebface8 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
    filtered_test_methods: 0x0000555d8ebfac98 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
    leakchecker: 0x0000555d8ebfab30 [0     ] T_OBJECT (LeakChecker)len:7 ptr:0x0000555d8eacba90
    continuation: 0x0000555d8ebf8a60 [0     ] proc (Proc) block in _run_suite@&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:961
c:0008 p:0042 s:0053 e:000052 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1084
  me:
    called_id: orig_run_suite, type: iseq
    owner class: 0x0000555d8e36deb8 [3LM   ] T_MODULE (Module)Test::Unit::ExcludesOption
    defined_class: 0x0000555d8e36d300 [3LM   ] T_ICLASS src:Test::Unit::ExcludesOption
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    suite: 0x0000555d8ec04d60 [2     ] T_CLASS DRbTests::TestBug16634
    type: T_SYMBOL test
    ex: T_NIL
c:0007 p:0103 s:0046 E:001e80 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:55
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x0000555d8e73f3c0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    suite: 0x0000555d8ec04d60 [2     ] T_CLASS DRbTests::TestBug16634
    type: T_SYMBOL test
    orig_testout: 0x0000555d8e3b5a10 [0LM  U] T_FILE (IO)
    i: 0x0000555d8ebfbf30 [0    U] T_FILE (IO)
    o: 0x0000555d8ebfbee0 [0    U] T_FILE (IO)
    orig_stdin: 0x0000555d8e3b5a60 [0LM  U] T_FILE (IO)
    orig_stdout: 0x0000555d8e3b5a10 [0LM  U] T_FILE (IO)
    th: 0x0000555d8ebfbe18 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    e: T_FIXNUM 0
    f: T_FIXNUM 0
    s: T_FIXNUM 0
    result: T_NIL
c:0006 p:0008 s:0030 e:000029 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:31 [FINISH]
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x0000555d8e73f3c0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    suite: 0x0000555d8ec04d60 [2     ] T_CLASS DRbTests::TestBug16634
c:0005 p:---- s:0026 e:000025 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x0000555d8e3c5c58 [3LM R ] T_CLASS Array
  self: 0x0000555d8ec04108 [0     ] T_ARRAY (Array)[   ] len: 12, capa:20 ptr:0x0000555d8ecba0e0
c:0004 p:0005 s:0022 e:000021 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:30
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x0000555d8e73f3c0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    suites: 0x0000555d8ec04108 [0     ] T_ARRAY (Array)[   ] len: 12, capa:20 ptr:0x0000555d8ecba0e0
    type: T_SYMBOL test
c:0003 p:0259 s:0016 e:000015 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:125
  me:
    called_id: run, type: iseq
    owner class: 0x0000555d8e73f3c0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    args: 0x0000555d8e3b4e58 [3LM   ] T_ARRAY [E ] len: 0 (embed)
    buf: 0x0000555d8ede5328 [0     ] T_STRING (String)run &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;test_drb.rb test

    suites: 0x0000555d8ede51c0 [0     ] T_ARRAY (Array)[   ] len: 36, capa:36 ptr:0x0000555d8eb9f170
    e: T_NIL
    trace: T_NIL
    err: T_NIL
c:0002 p:0142 s:0006 e:000005 EVAL   &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:205 [FINISH]
  self: 0x0000555d8e3e4450 [3LM   ] T_OBJECT (embed) len:3
c:0001 p:0000 s:0003 E:000870 (none) [FINISH]
  self: 0x0000555d8e3e4450 [3LM   ] T_OBJECT (embed) len:3

th: 0x555d8ef4d430, native_id: 0x7f905e44a700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0012 e:000011 CFUNC  :readpartial
  me:
    called_id: readpartial, type: cfunc
    owner class: 0x0000555d8e3b77c0 [3LM R ] T_CLASS IO
  self: 0x0000555d8ebfbf30 [0    U] T_FILE (IO)
c:0002 p:0036 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:45 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x0000555d8e73f3c0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x0000555d8e681d20 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x0000555d8e7721d0
  lvars:
    buf: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x555d8ecf2050, native_id: 0x7f905e126700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0011 e:000010 CFUNC  :pop
  me:
    called_id: pop, type: cfunc
    owner class: 0x0000555d8e395530 [3LM R ] T_CLASS Thread::Queue
  self: 0x0000555d8e4c9640 [0     ] queue (Thread::Queue)queue
c:0002 p:0024 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;drb&#x2F;extservm.rb:64 [FINISH]
  me:
    called_id: invoke_thread, type: iseq
    owner class: 0x0000555d8ec1d2e8 [2     ] T_CLASS DRb::ExtServManager
  self: 0x0000555d8ebf82e0 [0     ] T_OBJECT (DRb::ExtServManager)len:10 ptr:0x0000555d8e8ace40
  lvars:
    name: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

$1 = 0
&quot;&gt;&gt;&gt; Finish
&quot;
[nil, 1814]
&quot;gdb -p 1815 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
[New LWP 1824]
[New LWP 3235]
[New LWP 3236]
[Thread debugging using libthread_db enabled]
Using host libthread_db library &quot;&#x2F;lib&#x2F;x86_64-linux-gnu&#x2F;libthread_db.so.1&quot;.
0x00007fd233a2ecf6 in __GI_ppoll (fds=fds@entry=0x7fff2900bfe0, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
39	..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c: No such file or directory.
&gt;&gt;&gt; Threads  Id   Target Id         Frame 
* 1    Thread 0x7fd2344f9d80 (LWP 1815) &quot;ruby&quot; 0x00007fd233a2ecf6 in __GI_ppoll (fds=fds@entry=0x7fff2900bfe0, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
  2    Thread 0x7fd231420700 (LWP 1824) &quot;parallel.rb:43&quot; 0x00007fd233a2ebf9 in __GI___poll (fds=fds@entry=0x7fd23131f660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
  3    Thread 0x7fd212eb7700 (LWP 3235) &quot;imap.rb:1121&quot; 0x00007fd233a2ebf9 in __GI___poll (fds=fds@entry=0x7fd212db6620, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
  4    Thread 0x7fd212fd8700 (LWP 3236) &quot;test_imap.rb:1*&quot; 0x00007fd233a2ebf9 in __GI___poll (fds=fds@entry=0x7fd212ed73f0, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
&gt;&gt;&gt; Machine level backtrace

Thread 4 (Thread 0x7fd212fd8700 (LWP 3236)):
#0  0x00007fd233a2ebf9 in __GI___poll (fds=fds@entry=0x7fd212ed73f0, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007fd233e13108 in poll (__timeout=-1, __nfds=1, __fds=0x7fd212ed73f0) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=13, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7fd212ed7560) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007fd233f63fe1 in rb_thread_io_blocking_region (func=func@entry=0x7fd233e13040 &lt;internal_read_func&gt;, data1=data1@entry=0x7fd212ed7560, fd=fd@entry=13) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007fd233e26e1d in rb_read_internal (count=78, buf=0x7fd204020b10, fd=13) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1136
#6  io_bufread (fptr=0x55a1aaae3ef0, len=78, ptr=0x7fd204020b10 &quot;\240\\\001\004\322\177&quot;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2579
#7  bufread_call (arg=arg@entry=140540237412048) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2618
#8  0x00007fd233ddd184 in rb_ensure (b_proc=b_proc@entry=0x7fd233e26c80 &lt;bufread_call&gt;, data1=data1@entry=140540237412048, e_proc=e_proc@entry=0x7fd233f34930 &lt;rb_str_unlocktmp&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#9  0x00007fd233f45d6b in rb_str_locktmp_ensure (str=&lt;optimized out&gt;, func=func@entry=0x7fd233e26c80 &lt;bufread_call&gt;, arg=arg@entry=140540237412048) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;string.c:2781
#10 0x00007fd233e126dc in io_fread (str=&lt;optimized out&gt;, offset=offset@entry=0, size=size@entry=78, fptr=fptr@entry=0x55a1aaae3ef0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2643
#11 0x00007fd233e26642 in io_read (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3295
#12 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=ec@entry=0x7fd22406ed70, reg_cfp=reg_cfp@entry=0x7fd212fd7c58, calling=calling@entry=0x7fd212ed7a50, cd=cd@entry=0x55a1aa58b290) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#13 0x00007fd233f959c5 in vm_call_cfunc (ec=ec@entry=0x7fd22406ed70, reg_cfp=reg_cfp@entry=0x7fd212fd7c58, calling=calling@entry=0x7fd212ed7a50, cd=cd@entry=0x55a1aa58b290) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#14 0x00007fd233fafbfe in vm_call_method_each_type (ec=ec@entry=0x7fd22406ed70, cfp=cfp@entry=0x7fd212fd7c58, calling=0x7fd212ed7a50, cd=0x55a1aa58b290) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#15 0x00007fd233fb0353 in vm_call_method (ec=0x7fd22406ed70, cfp=0x7fd212fd7c58, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#16 0x00007fd233fa07e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#17 vm_exec_core (ec=0x7fd22406ed70, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#18 0x00007fd233fa688d in rb_vm_exec (ec=0x7fd22406ed70, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#19 0x00007fd233fa717f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x7fd22406ed70, self=self@entry=140540237413072, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#20 0x00007fd233fa8223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=317553744, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140540237413072, captured=0x55a1aa45b000, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#21 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=317553904, argv=0x7fd212ed7c50, argc=&lt;optimized out&gt;, self=140540237413072, proc=0x55a1aa75bf38, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#22 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x55a1aa75bf38, self=140540237413072, argc=argc@entry=317553744, argv=argv@entry=0x7fd212ed7cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#23 0x00007fd233fa959d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x55a1aa75bf38, argc=argc@entry=317553744, argv=argv@entry=0x7fd212ed7cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#24 0x00007fd233f620bd in thread_do_start_proc (th=0x55a1aa45b000) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 3 (Thread 0x7fd212eb7700 (LWP 3235)):
#0  0x00007fd233a2ebf9 in __GI___poll (fds=fds@entry=0x7fd212db6620, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007fd233e13108 in poll (__timeout=-1, __nfds=1, __fds=0x7fd212db6620) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=12, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7fd212db6780) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007fd233f63fe1 in rb_thread_io_blocking_region (func=func@entry=0x7fd233e13040 &lt;internal_read_func&gt;, data1=data1@entry=0x7fd212db6780, fd=fd@entry=12) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007fd233e1fe18 in rb_read_internal (count=8192, buf=0x55a1aa5f2b70, fd=12) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1136
#6  io_fillbuf (fptr=fptr@entry=0x55a1aa552b10) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2234
#7  0x00007fd233e24c08 in io_fillbuf (fptr=0x55a1aa552b10) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2231
#8  appendline (lp=&lt;synthetic pointer&gt;, strp=&lt;synthetic pointer&gt;, delim=10, fptr=0x55a1aa552b10) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3392
#9  rb_io_getline_0 (rs=&lt;optimized out&gt;, rs@entry=94152823036760, limit=&lt;optimized out&gt;, limit@entry=-1, chomp=chomp@entry=0, fptr=fptr@entry=0x55a1aa552b10) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3644
#10 0x00007fd233e26506 in rb_io_getline_1 (io=94152837936880, chomp=0, limit=-1, rs=94152823036760) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3703
#11 rb_io_getline (io=94152837936880, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3723
#12 rb_io_gets_m (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=94152837936880) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3778
#13 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=0x55a1aa5542e0, reg_cfp=0x7fd212eb6c20, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#14 0x00007fd233fa07e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#15 vm_exec_core (ec=0x55a1aa5542e0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#16 0x00007fd233fa688d in rb_vm_exec (ec=0x55a1aa5542e0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#17 0x00007fd233fa717f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x55a1aa5542e0, self=self@entry=140540236229328, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#18 0x00007fd233fa8223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=316370000, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140540236229328, captured=0x55a1aa5540f0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#19 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=316370160, argv=0x7fd212db6c50, argc=&lt;optimized out&gt;, self=140540236229328, proc=0x55a1aa75a4a8, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#20 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x55a1aa75a4a8, self=140540236229328, argc=argc@entry=316370000, argv=argv@entry=0x7fd212db6cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#21 0x00007fd233fa959d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x55a1aa75a4a8, argc=argc@entry=316370000, argv=argv@entry=0x7fd212db6cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#22 0x00007fd233f620bd in thread_do_start_proc (th=0x55a1aa5540f0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0x7fd231420700 (LWP 1824)):
#0  0x00007fd233a2ebf9 in __GI___poll (fds=fds@entry=0x7fd23131f660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007fd233e13108 in poll (__timeout=-1, __nfds=1, __fds=0x7fd23131f660) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=7, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7fd23131f8c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007fd233f63fe1 in rb_thread_io_blocking_region (func=0x7fd233e13040 &lt;internal_read_func&gt;, data1=0x7fd23131f8c0, fd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007fd233ddd184 in rb_ensure (b_proc=b_proc@entry=0x7fd233e110a0 &lt;read_internal_call&gt;, data1=data1@entry=140540745218240, e_proc=e_proc@entry=0x7fd233f34930 &lt;rb_str_unlocktmp&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#6  0x00007fd233f45d6b in rb_str_locktmp_ensure (str=&lt;optimized out&gt;, func=func@entry=0x7fd233e110a0 &lt;read_internal_call&gt;, arg=arg@entry=140540745218240) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;string.c:2781
#7  0x00007fd233e27630 in read_internal_locktmp (iis=0x7fd23131f8c0, str=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2953
#8  io_getpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;, no_exception=no_exception@entry=8, nonblock=nonblock@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2995
#9  0x00007fd233e27b01 in io_readpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3088
#10 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=0x7fd22408f8c0, reg_cfp=0x7fd23141fc90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#11 0x00007fd233fa07e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#12 vm_exec_core (ec=0x7fd22408f8c0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#13 0x00007fd233fa688d in rb_vm_exec (ec=0x7fd22408f8c0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#14 0x00007fd233fa717f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x7fd22408f8c0, self=self@entry=140540745218768, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#15 0x00007fd233fa8223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=825359440, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140540745218768, captured=0x55a1aa5ab350, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#16 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=825359600, argv=0x7fd23131fc50, argc=&lt;optimized out&gt;, self=140540745218768, proc=0x55a1aa73ee88, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#17 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x55a1aa73ee88, self=140540745218768, argc=argc@entry=825359440, argv=argv@entry=0x7fd23131fcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#18 0x00007fd233fa959d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x55a1aa73ee88, argc=argc@entry=825359440, argv=argv@entry=0x7fd23131fcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#19 0x00007fd233f620bd in thread_do_start_proc (th=0x55a1aa5ab350) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0x7fd2344f9d80 (LWP 1815)):
#0  0x00007fd233a2ecf6 in __GI_ppoll (fds=fds@entry=0x7fff2900bfe0, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007fd233f5f850 in native_ppoll_sleep (th=0x55a1a8fd8f50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2106
#2  0x00007fd233f60895 in native_sleep (th=th@entry=0x55a1a8fd8f50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2146
#3  0x00007fd233f64bd3 in sleep_forever (fl=1, th=0x55a1a8fd8f50) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1400
#4  rb_thread_sleep_deadly_allow_spurious_wakeup (blocker=blocker@entry=94152813285200) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1495
#5  rb_mutex_sleep_forever (self=self@entry=94152837937360) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:487
#6  0x00007fd233ddd184 in rb_ensure (b_proc=b_proc@entry=0x7fd233f64b20 &lt;rb_mutex_sleep_forever&gt;, data1=data1@entry=94152837937360, e_proc=e_proc@entry=0x7fd233f63500 &lt;mutex_lock_uninterruptible&gt;, data2=data2@entry=94152837937360) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#7  0x00007fd233f63683 in rb_mutex_sleep (self=94152837937360, timeout=8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:518
#8  0x00007fd233fa99c8 in vm_call0_cfunc_with_frame (argv=0x7fff2900c458, cd=0x7fff2900c1e0, calling=0x7fff2900c1f0, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:97
#9  vm_call0_cfunc (argv=0x7fff2900c458, cd=0x7fff2900c1e0, calling=0x7fff2900c1f0, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:111
#10 vm_call0_body (argv=0x7fff2900c458, cd=0x7fff2900c1e0, calling=0x7fff2900c1f0, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:146
#11 rb_vm_call0 (ec=ec@entry=0x55a1a8fd95b0, recv=recv@entry=94152837937360, id=id@entry=24481, argc=argc@entry=1, argv=argv@entry=0x7fff2900c458, me=me@entry=0x55a1a90455d8, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:59
#12 0x00007fd233faa1f5 in rb_vm_call_kw (ec=ec@entry=0x55a1a8fd95b0, recv=recv@entry=94152837937360, id=id@entry=24481, argc=argc@entry=1, argv=argv@entry=0x7fff2900c458, me=me@entry=0x55a1a90455d8, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:239
#13 0x00007fd233faba59 in rb_call0 (self=&lt;optimized out&gt;, call_scope=CALL_FCALL, argv=0x7fff2900c458, argc=1, mid=24481, recv=94152837937360, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:361
#14 rb_call (scope=CALL_FCALL, argv=0x7fff2900c458, argc=1, mid=24481, recv=94152837937360) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:689
#15 rb_funcallv (recv=94152837937360, mid=24481, argc=1, argv=0x7fff2900c458) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:930
#16 0x00007fd233ddd184 in rb_ensure (b_proc=b_proc@entry=0x7fd233f5a740 &lt;do_sleep&gt;, data1=data1@entry=140733881304144, e_proc=e_proc@entry=0x7fd233f59fc0 &lt;delete_from_waitq&gt;, data2=data2@entry=140733881304160) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#17 0x00007fd233f5ac88 in rb_condvar_wait (argc=2, argv=0x7fff2900c670, self=94152837935920) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:1460
#18 0x00007fd233fa99c8 in vm_call0_cfunc_with_frame (argv=0x7fff2900c670, cd=0x7fff2900c4f0, calling=0x7fff2900c500, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:97
#19 vm_call0_cfunc (argv=0x7fff2900c670, cd=0x7fff2900c4f0, calling=0x7fff2900c500, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:111
#20 vm_call0_body (argv=0x7fff2900c670, cd=0x7fff2900c4f0, calling=0x7fff2900c500, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:146
#21 rb_vm_call0 (ec=ec@entry=0x55a1a8fd95b0, recv=recv@entry=94152837935920, id=id@entry=24641, argc=argc@entry=2, argv=argv@entry=0x7fff2900c670, me=me@entry=0x55a1a9044ca0, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:59
#22 0x00007fd233faa1f5 in rb_vm_call_kw (ec=ec@entry=0x55a1a8fd95b0, recv=recv@entry=94152837935920, id=id@entry=24641, argc=argc@entry=2, argv=argv@entry=0x7fff2900c670, me=me@entry=0x55a1a9044ca0, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:239
#23 0x00007fd233faba59 in rb_call0 (self=&lt;optimized out&gt;, call_scope=CALL_FCALL, argv=0x7fff2900c670, argc=2, mid=24641, recv=94152837935920, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:361
#24 rb_call (scope=CALL_FCALL, argv=0x7fff2900c670, argc=2, mid=24641, recv=94152837935920) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:689
#25 rb_funcallv (recv=94152837935920, mid=24641, argc=argc@entry=2, argv=argv@entry=0x7fff2900c670) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:930
#26 0x00007fd231626efd in monitor_wait_for_cond_body (v=v@entry=140733881305008) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;ext&#x2F;monitor&#x2F;monitor.c:152
#27 0x00007fd233ddd184 in rb_ensure (b_proc=b_proc@entry=0x7fd231626e80 &lt;monitor_wait_for_cond_body&gt;, data1=data1@entry=140733881305008, e_proc=e_proc@entry=0x7fd231627050 &lt;monitor_enter_for_cond&gt;, data2=data2@entry=140733881305008) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#28 0x00007fd231626fbd in monitor_wait_for_cond (monitor=94152837937400, cond=&lt;optimized out&gt;, timeout=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;ext&#x2F;monitor&#x2F;monitor.c:180
#29 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=ec@entry=0x55a1a8fd95b0, reg_cfp=reg_cfp@entry=0x7fd2344f7980, calling=calling@entry=0x7fff2900ca50, cd=cd@entry=0x55a1a94eafd0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#30 0x00007fd233f959c5 in vm_call_cfunc (ec=ec@entry=0x55a1a8fd95b0, reg_cfp=reg_cfp@entry=0x7fd2344f7980, calling=calling@entry=0x7fff2900ca50, cd=cd@entry=0x55a1a94eafd0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#31 0x00007fd233fafbfe in vm_call_method_each_type (ec=ec@entry=0x55a1a8fd95b0, cfp=cfp@entry=0x7fd2344f7980, calling=0x7fff2900ca50, cd=0x55a1a94eafd0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#32 0x00007fd233fb0353 in vm_call_method (ec=0x55a1a8fd95b0, cfp=0x7fd2344f7980, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#33 0x00007fd233fa07e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#34 vm_exec_core (ec=0x55a1a8fd95b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#35 0x00007fd233fa688d in rb_vm_exec (ec=0x55a1a8fd95b0, mjit_enable_p=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#36 0x00007fd233fa7d27 in vm_yield (kw_splat=0, argv=0x0, argc=0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#37 rb_yield_0 (argv=0x0, argc=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#38 rb_yield_values2 (argc=0, argv=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1187
#39 0x00007fd233ddd184 in rb_ensure (b_proc=0x7fd231626e70 &lt;monitor_sync_body&gt;, data1=94152837937400, e_proc=&lt;optimized out&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#40 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=0x55a1a8fd95b0, reg_cfp=0x7fd2344f7a28, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#41 0x00007fd233fa08ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#42 vm_exec_core (ec=0x55a1a8fd95b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#43 0x00007fd233fa688d in rb_vm_exec (ec=ec@entry=0x55a1a8fd95b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#44 0x00007fd233fa717f in invoke_block (ec=ec@entry=0x55a1a8fd95b0, iseq=iseq@entry=0x55a1aa64b198, self=self@entry=94152837937680, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#45 0x00007fd233fa8963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7fff2900d070, argc=1, self=94152837937680, captured=&lt;optimized out&gt;, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#46 invoke_block_from_c_bh (ec=0x55a1a8fd95b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7fff2900d0d0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#47 0x00007fd233fa8c7c in vm_yield (argc=1, kw_splat=0, argv=0x7fff2900d0d0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#48 rb_yield_0 (argv=0x7fff2900d0d0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#49 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#50 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#51 0x00007fd233d437ec in rb_ary_each (ary=94152837931720) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:2379
#52 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=0x55a1a8fd95b0, reg_cfp=0x7fd2344f7b78, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#53 0x00007fd233fa08ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#54 vm_exec_core (ec=0x55a1a8fd95b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#55 0x00007fd233fa688d in rb_vm_exec (ec=0x55a1a8fd95b0, mjit_enable_p=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#56 0x00007fd233fa7d27 in vm_yield (kw_splat=0, argv=0x0, argc=0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#57 rb_yield_0 (argv=0x0, argc=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#58 rb_yield_values2 (argc=0, argv=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1187
#59 0x00007fd233ddd184 in rb_ensure (b_proc=0x7fd231626e70 &lt;monitor_sync_body&gt;, data1=94152837937400, e_proc=&lt;optimized out&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#60 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=0x55a1a8fd95b0, reg_cfp=0x7fd2344f7be8, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#61 0x00007fd233fa08ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#62 vm_exec_core (ec=0x55a1a8fd95b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#63 0x00007fd233fa688d in rb_vm_exec (ec=ec@entry=0x55a1a8fd95b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#64 0x00007fd233fa717f in invoke_block (ec=ec@entry=0x55a1a8fd95b0, iseq=iseq@entry=0x55a1a8fefb88, self=self@entry=94152816795200, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#65 0x00007fd233fa8963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7fff2900d870, argc=1, self=94152816795200, captured=&lt;optimized out&gt;, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#66 invoke_block_from_c_bh (ec=0x55a1a8fd95b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7fff2900d8d0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#67 0x00007fd233fa8c7c in vm_yield (argc=1, kw_splat=0, argv=0x7fff2900d8d0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#68 rb_yield_0 (argv=0x7fff2900d8d0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#69 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#70 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#71 0x00007fd233d48ebc in rb_ary_collect (ary=94152837817120) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#72 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=0x55a1a8fd95b0, reg_cfp=0x7fd2344f7de0, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#73 0x00007fd233fa08ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#74 vm_exec_core (ec=0x55a1a8fd95b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#75 0x00007fd233fa688d in rb_vm_exec (ec=ec@entry=0x55a1a8fd95b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#76 0x00007fd233fa717f in invoke_block (ec=ec@entry=0x55a1a8fd95b0, iseq=iseq@entry=0x55a1a90151f8, self=self@entry=94152816795200, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#77 0x00007fd233fa8963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7fff2900dc60, argc=1, self=94152816795200, captured=&lt;optimized out&gt;, ec=0x55a1a8fd95b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#78 invoke_block_from_c_bh (ec=0x55a1a8fd95b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7fff2900dcc0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#79 0x00007fd233fa8c7c in vm_yield (argc=1, kw_splat=0, argv=0x7fff2900dcc0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#80 rb_yield_0 (argv=0x7fff2900dcc0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#81 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#82 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#83 0x00007fd233d48ebc in rb_ary_collect (ary=94152837820480) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#84 0x00007fd233f95735 in vm_call_cfunc_with_frame (ec=0x55a1a8fd95b0, reg_cfp=0x7fd2344f7f30, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#85 0x00007fd233fa08ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#86 vm_exec_core (ec=0x55a1a8fd95b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#87 0x00007fd233fa7015 in rb_vm_exec (ec=0x55a1a8fd95b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#88 0x00007fd233fb19c0 in rb_iseq_eval_main (iseq=iseq@entry=0x55a1a9015888) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:2239
#89 0x00007fd233dd95ba in rb_ec_exec_node (ec=ec@entry=0x55a1a8fd95b0, n=n@entry=0x55a1a9015888) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:297
#90 0x00007fd233ddf838 in ruby_run_node (n=0x55a1a9015888) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:355
#91 0x000055a1a6dd9a1f in main (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;main.c:50
&gt;&gt;&gt; Dump Ruby level backtrace
th: 0x55a1a8fd8f50, native_id: 0x7fd2344f9d80
-- Control frame information -----------------------------------------------
c:0033 p:---- s:0195 e:000194 CFUNC  :sleep
  me:
    called_id: sleep, type: cfunc
    owner class: 0x000055a1a90457e0 [3LM   ] T_CLASS Thread::Mutex
  self: 0x000055a1aa75b8d0 [0    U] mutex (Thread::Mutex)mutex
c:0032 p:---- s:0192 e:000191 CFUNC  :wait
  me:
    called_id: wait, type: cfunc
    owner class: 0x000055a1a9044db8 [3LM R ] T_CLASS Thread::ConditionVariable
  self: 0x000055a1aa75b330 [0     ] condvar (Thread::ConditionVariable)condvar
c:0031 p:---- s:0189 e:000188 CFUNC  :wait_for_cond
  me:
    called_id: wait_for_cond, type: cfunc
    owner class: 0x000055a1a934d1b8 [3LM R ] T_CLASS Monitor
  self: 0x000055a1aa75b8f8 [0     ] monitor (Monitor)monitor
c:0030 p:0019 s:0183 e:000182 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;build&#x2F;trunk-no-theap&#x2F;.ext&#x2F;common&#x2F;monitor.rb:108
  me:
    called_id: wait, type: iseq
    owner class: 0x000055a1a934cb50 [3LM R ] T_CLASS MonitorMixin::ConditionVariable
  self: 0x000055a1aa75b358 [0     ] T_OBJECT (MonitorMixin::ConditionVariable)(embed) len:3
  lvars:
    timeout: T_NIL
c:0029 p:0044 s:0178 e:000177 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1370 [FINISH]
  me:
    called_id: send_literal, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    e: T_NIL
c:0028 p:---- s:0174 e:000173 CFUNC  :synchronize
  me:
    called_id: synchronize, type: cfunc
    owner class: 0x000055a1a934d1b8 [3LM R ] T_CLASS Monitor
  self: 0x000055a1aa75b8f8 [0     ] monitor (Monitor)monitor
c:0027 p:0009 s:0170 e:000169 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;build&#x2F;trunk-no-theap&#x2F;.ext&#x2F;common&#x2F;monitor.rb:202
  me:
    called_id: synchronize, type: iseq
    owner class: 0x000055a1a934cc40 [3LM   ] T_MODULE MonitorMixin
    defined_class: 0x000055a1aa6a4630 [2     ] T_ICLASS src:MonitorMixin
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    b: T_NIL
c:0026 p:0007 s:0165 e:000164 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1365
  me:
    called_id: send_literal, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    str: 0x000055a1aa73d010 [0     ] T_STRING (String)From: shugo@example.com
To: matz@example.com
Subject: hello

hello world

    tag: 0x000055a1aa75a070 [0     ] T_STRING (String)RUBY0001
c:0025 p:0011 s:0159 e:000158 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1590
  me:
    called_id: send_data, type: iseq
    owner class: 0x000055a1aa6e29d0 [2     ] T_CLASS Net::IMAP::Literal
  self: 0x000055a1aa75a340 [0     ] T_OBJECT (Net::IMAP::Literal)(embed) len:3
  lvars:
    imap: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
    tag: 0x000055a1aa75a070 [0     ] T_STRING (String)RUBY0001
c:0024 p:0089 s:0153 e:000152 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1341
  me:
    called_id: send_data, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    data: 0x000055a1aa75a340 [0     ] T_OBJECT (Net::IMAP::Literal)(embed) len:3
    tag: 0x000055a1aa75a070 [0     ] T_STRING (String)RUBY0001
c:0023 p:0014 s:0147 e:000146 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1266 [FINISH]
  me:
    called_id: send_command, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    i: 0x000055a1aa75a340 [0     ] T_OBJECT (Net::IMAP::Literal)(embed) len:3
c:0022 p:---- s:0143 e:000142 CFUNC  :each
  me:
    called_id: each, type: cfunc
    owner class: 0x000055a1a9075c60 [3LM   ] T_CLASS Array
  self: 0x000055a1aa75a2c8 [0     ] T_ARRAY (Array)[E ] len: 2 (embed)
c:0021 p:0032 s:0139 e:000138 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1264 [FINISH]
  me:
    called_id: send_command, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    tag: 0x000055a1aa75a070 [0     ] T_STRING (String)RUBY0001
c:0020 p:---- s:0135 e:000134 CFUNC  :synchronize
  me:
    called_id: synchronize, type: cfunc
    owner class: 0x000055a1a934d1b8 [3LM R ] T_CLASS Monitor
  self: 0x000055a1aa75b8f8 [0     ] monitor (Monitor)monitor
c:0019 p:0009 s:0131 e:000130 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;build&#x2F;trunk-no-theap&#x2F;.ext&#x2F;common&#x2F;monitor.rb:202
  me:
    called_id: synchronize, type: iseq
    owner class: 0x000055a1a934cc40 [3LM   ] T_MODULE MonitorMixin
    defined_class: 0x000055a1aa6a4630 [2     ] T_ICLASS src:MonitorMixin
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    b: T_NIL
c:0018 p:0004 s:0126 e:000125 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1258
  me:
    called_id: send_command, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    cmd: 0x000055a1aa60f9e0 [0     ] T_STRING (String)APPEND
    args: 0x000055a1aa75a2c8 [0     ] T_ARRAY (Array)[E ] len: 2 (embed)
    block: 0x000055a1aa75a318 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
c:0017 p:0061 s:0119 e:000118 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:708
  me:
    called_id: append, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    mailbox: 0x00007fd22c00d290 [0     ] T_STRING (String)INBOX
    message: 0x000055a1aa73d010 [0     ] T_STRING (String)From: shugo@example.com
To: matz@example.com
Subject: hello

hello world

    flags: T_NIL
    date_time: T_NIL
    args: 0x000055a1aa75a390 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
c:0016 p:0067 s:0110 E:000680 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;net&#x2F;imap&#x2F;test_imap.rb:703
  me:
    called_id: test_append, type: iseq
    owner class: 0x000055a1aa724830 [2     ] T_CLASS IMAPTest
  self: 0x000055a1aa73c9f8 [0     ] T_OBJECT (IMAPTest)len:10 ptr:0x000055a1aa459d30
  lvars:
    server: 0x000055a1aa73ecd0 [0    U] T_FILE (TCPServer)
    port: T_FIXNUM 36265
    mail: 0x000055a1aa73d010 [0     ] T_STRING (String)From: shugo@example.com
To: matz@example.com
Subject: hello

hello world

    requests: 0x000055a1aa75bfb0 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
    received_mail: T_NIL
    imap: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
c:0015 p:0052 s:0100 e:000099 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1231
  me:
    called_id: run_test, type: iseq
    owner class: 0x000055a1a922aa60 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x000055a1aa73c9f8 [0     ] T_OBJECT (IMAPTest)len:10 ptr:0x000055a1aa459d30
  lvars:
    name: 0x000055a1aa73e550 [0     ] T_STRING (String)test_append
    progname: 0x000055a1a9036790 [3LM   ] T_STRING (String)&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb
c:0014 p:0065 s:0094 e:000093 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1320
  me:
    called_id: run, type: iseq
    owner class: 0x000055a1a922aa60 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x000055a1aa73c9f8 [0     ] T_OBJECT (IMAPTest)len:10 ptr:0x000055a1aa459d30
  lvars:
    runner: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
    start_time: 0x000055a1aa73c980 [0    U] time (Time)time
    result: 0x000055a1a902cb28 [3LM   ] T_STRING (String)
    time: T_NIL
    e: T_NIL
c:0013 p:0013 s:0085 e:000084 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;testcase.rb:18
  me:
    called_id: run, type: iseq
    owner class: 0x000055a1a9026e08 [3LM   ] T_CLASS Test::Unit::TestCase
  self: 0x000055a1aa73c9f8 [0     ] T_OBJECT (IMAPTest)len:10 ptr:0x000055a1aa459d30
  lvars:
    runner: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
c:0012 p:0077 s:0080 e:000079 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:969 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x000055a1a922bca8 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    method: 0x000055a1aa73e550 [0     ] T_STRING (String)test_append
    inst: 0x000055a1aa73c9f8 [0     ] T_OBJECT (IMAPTest)len:10 ptr:0x000055a1aa459d30
    start_time: T_NIL
    result: T_NIL
c:0011 p:---- s:0073 e:000072 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x000055a1a9075c60 [3LM   ] T_CLASS Array
  self: 0x000055a1aa73e320 [0     ] T_ARRAY (Array)[   ] len: 24, capa:37 ptr:0x000055a1aa189da0
c:0010 p:0006 s:0069 e:000068 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:962
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x000055a1a922bca8 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    assertions: T_NIL
c:0009 p:0163 s:0065 E:000960 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:989
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x000055a1a922bca8 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    suite: 0x000055a1aa724830 [2     ] T_CLASS IMAPTest
    type: T_SYMBOL test
    header: 0x000055a1aa73e9b0 [0     ] T_STRING (String)test_suite_header
    filter: 0x000055a1a9487560 [3LM   ] T_REGEXP 
    all_test_methods: 0x000055a1aa73e370 [0     ] T_ARRAY (Array)[   ] len: 24, capa:24 ptr:0x000055a1aa189b70
    filtered_test_methods: 0x000055a1aa73e320 [0     ] T_ARRAY (Array)[   ] len: 24, capa:37 ptr:0x000055a1aa189da0
    leakchecker: 0x000055a1aa73df88 [0     ] T_OBJECT (LeakChecker)len:7 ptr:0x000055a1aa5abaf0
    continuation: 0x000055a1aa73ca70 [0     ] proc (Proc) block in _run_suite@&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:961
c:0008 p:0042 s:0053 e:000052 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1084
  me:
    called_id: orig_run_suite, type: iseq
    owner class: 0x000055a1a901dfb0 [3LM   ] T_MODULE (Module)Test::Unit::ExcludesOption
    defined_class: 0x000055a1a901d3a8 [3LM   ] T_ICLASS src:Test::Unit::ExcludesOption
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    suite: 0x000055a1aa724830 [2     ] T_CLASS IMAPTest
    type: T_SYMBOL test
    ex: T_NIL
c:0007 p:0103 s:0046 E:0011d0 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:55
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x000055a1a93ef468 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    suite: 0x000055a1aa724830 [2     ] T_CLASS IMAPTest
    type: T_SYMBOL test
    orig_testout: 0x000055a1a90659f0 [0LM  U] T_FILE (IO)
    i: 0x000055a1aa73ef28 [0    U] T_FILE (IO)
    o: 0x000055a1aa73ef00 [0    U] T_FILE (IO)
    orig_stdin: 0x000055a1a9065a40 [0LM  U] T_FILE (IO)
    orig_stdout: 0x000055a1a90659f0 [0LM  U] T_FILE (IO)
    th: 0x000055a1aa73eeb0 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    e: T_FIXNUM 0
    f: T_FIXNUM 0
    s: T_FIXNUM 1
    result: T_NIL
c:0006 p:0008 s:0030 e:000029 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:31 [FINISH]
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x000055a1a93ef468 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    suite: 0x000055a1aa724830 [2     ] T_CLASS IMAPTest
c:0005 p:---- s:0026 e:000025 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x000055a1a9075c60 [3LM   ] T_CLASS Array
  self: 0x000055a1aa73f040 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
c:0004 p:0005 s:0022 e:000021 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:30
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x000055a1a93ef468 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    suites: 0x000055a1aa73f040 [0     ] T_ARRAY (Array)[E ] len: 1 (embed)
    type: T_SYMBOL test
c:0003 p:0259 s:0016 e:000015 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:125
  me:
    called_id: run, type: iseq
    owner class: 0x000055a1a93ef468 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    args: 0x000055a1a9064e38 [3LM   ] T_ARRAY [E ] len: 0 (embed)
    buf: 0x000055a1a9509880 [0     ] T_STRING (String)run &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;net&#x2F;imap&#x2F;test_imap.rb test

    suites: 0x000055a1a9522470 [0     ] T_ARRAY (Array)[   ] len: 56, capa:56 ptr:0x000055a1aa135770
    e: T_NIL
    trace: T_NIL
    err: T_NIL
c:0002 p:0142 s:0006 e:000005 EVAL   &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:205 [FINISH]
  self: 0x000055a1a9094430 [3LM   ] T_OBJECT (embed) len:3
c:0001 p:0000 s:0003 E:000f20 (none) [FINISH]
  self: 0x000055a1a9094430 [3LM   ] T_OBJECT (embed) len:3

th: 0x55a1aa5ab350, native_id: 0x7fd231420700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0012 e:000011 CFUNC  :readpartial
  me:
    called_id: readpartial, type: cfunc
    owner class: 0x000055a1a90677a0 [3LM   ] T_CLASS IO
  self: 0x000055a1aa73ef28 [0    U] T_FILE (IO)
c:0002 p:0036 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:45 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x000055a1a93ef468 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x000055a1a9331e40 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x000055a1a95656f0
  lvars:
    buf: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x55a1aa45b000, native_id: 0x7fd212fd8700
-- Control frame information -----------------------------------------------
c:0004 p:---- s:0017 e:000016 CFUNC  :read
  me:
    called_id: read, type: cfunc
    owner class: 0x000055a1a90677a0 [3LM   ] T_CLASS IO
  self: 0x000055a1aa75b290 [0    U] T_FILE (TCPSocket)
c:0003 p:0051 s:0012 e:000011 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;net&#x2F;imap&#x2F;test_imap.rb:689
  me:
    called_id: test_append, type: iseq
    owner class: 0x000055a1aa724830 [2     ] T_CLASS IMAPTest
  self: 0x000055a1aa73c9f8 [0     ] T_OBJECT (IMAPTest)len:10 ptr:0x000055a1aa459d30
  lvars:
    sock: 0x000055a1aa75b290 [0    U] T_FILE (TCPSocket)
    line: 0x000055a1aa759da0 [0     ] T_STRING (String)RUBY0001 APPEND INBOX {78}

    size: T_FIXNUM 78
c:0002 p:0003 s:0006 e:000005 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;net&#x2F;imap&#x2F;test_imap.rb:134 [FINISH]
  me:
    called_id: start_server, type: iseq
    owner class: 0x000055a1aa724830 [2     ] T_CLASS IMAPTest
  self: 0x000055a1aa73c9f8 [0     ] T_OBJECT (IMAPTest)len:10 ptr:0x000055a1aa459d30
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x55a1aa5540f0, native_id: 0x7fd212eb7700
-- Control frame information -----------------------------------------------
c:0005 p:---- s:0024 e:000023 CFUNC  :gets
  me:
    called_id: gets, type: cfunc
    owner class: 0x000055a1a90677a0 [3LM   ] T_CLASS IO
  self: 0x000055a1aa75b6f0 [0    U] T_FILE (Socket)
c:0004 p:0031 s:0019 e:000018 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1233
  me:
    called_id: get_response, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    buff: 0x000055a1aa758ef0 [0     ] T_STRING (String)
    s: T_NIL
c:0003 p:0019 s:0013 e:000012 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1150
  me:
    called_id: receive_responses, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
  lvars:
    connection_closed: T_FALSE
    resp: 0x000055a1aa759260 [0     ] T_STRUCT (Net::IMAP::ContinuationRequest)
    e: T_NIL
c:0002 p:0004 s:0006 e:000005 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;net&#x2F;imap.rb:1123 [FINISH]
  me:
    called_id: initialize, type: iseq
    owner class: 0x000055a1aa6a4770 [2     ] T_CLASS Net::IMAP
  self: 0x000055a1aa75ba10 [0     ] T_OBJECT (Net::IMAP)len:28 ptr:0x000055a1aa553fd0
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

$1 = 0
&quot;&gt;&gt;&gt; Finish
&quot;
[nil, 1815]
&quot;gdb -p 1816 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
[New LWP 1825]
[New LWP 1956]
[Thread debugging using libthread_db enabled]
Using host libthread_db library &quot;&#x2F;lib&#x2F;x86_64-linux-gnu&#x2F;libthread_db.so.1&quot;.
27	..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;read.c: No such file or directory.
0x00007fe4e13150b4 in __GI___libc_read (fd=8, buf=0x5593d7a10f80, nbytes=8192) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;read.c:27
&gt;&gt;&gt; Threads  Id   Target Id         Frame 
* 1    Thread 0x7fe4e1de4d80 (LWP 1816) &quot;ruby&quot; 0x00007fe4e13150b4 in __GI___libc_read (fd=8, buf=0x5593d7a10f80, nbytes=8192) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;read.c:27
  2    Thread 0x7fe4ded0e700 (LWP 1825) &quot;parallel.rb:43&quot; 0x00007fe4e1319bf9 in __GI___poll (fds=fds@entry=0x7fe4dec0d660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
  3    Thread 0x7fe4ce46c700 (LWP 1956) &quot;test_io_consol*&quot; 0x00007fe4e0dd69f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x5593d7aa2de8) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;futex-internal.h:88
&gt;&gt;&gt; Machine level backtrace

Thread 3 (Thread 0x7fe4ce46c700 (LWP 1956)):
#0  0x00007fe4e0dd69f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x5593d7aa2de8) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5593d7aa2e18, cond=0x5593d7aa2dc0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5593d7aa2dc0, mutex=0x5593d7aa2e18) at pthread_cond_wait.c:655
#3  0x00007fe4e18495e9 in rb_native_cond_wait (cond=&lt;optimized out&gt;, mutex=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:499
#4  0x00007fe4e184b324 in native_cond_sleep (th=th@entry=0x5593d7aa2d50, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:1205
#5  0x00007fe4e184b67d in native_sleep (th=0x5593d7aa2d50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2149
#6  0x00007fe4e184fd13 in queue_sleep () at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.h:93
#7  0x00007fe4e16c8184 in rb_ensure (b_proc=b_proc@entry=0x7fe4e184fc60 &lt;queue_sleep&gt;, data1=data1@entry=94093464609440, e_proc=e_proc@entry=0x7fe4e1844f70 &lt;queue_sleep_done&gt;, data2=data2@entry=140620688963472) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#8  0x00007fe4e1846e03 in queue_do_pop (self=94093464609440, q=0x5593d7b10830, should_block=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:969
#9  0x00007fe4e1880735 in vm_call_cfunc_with_frame (ec=ec@entry=0x7fe4b8005990, reg_cfp=reg_cfp@entry=0x7fe4ce46bc90, calling=calling@entry=0x7fe4ce36ba50, cd=cd@entry=0x5593d7ac12c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#10 0x00007fe4e18809c5 in vm_call_cfunc (ec=ec@entry=0x7fe4b8005990, reg_cfp=reg_cfp@entry=0x7fe4ce46bc90, calling=calling@entry=0x7fe4ce36ba50, cd=cd@entry=0x5593d7ac12c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#11 0x00007fe4e189abfe in vm_call_method_each_type (ec=ec@entry=0x7fe4b8005990, cfp=cfp@entry=0x7fe4ce46bc90, calling=0x7fe4ce36ba50, cd=0x5593d7ac12c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#12 0x00007fe4e189b353 in vm_call_method (ec=0x7fe4b8005990, cfp=0x7fe4ce46bc90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#13 0x00007fe4e188b7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#14 vm_exec_core (ec=0x7fe4b8005990, initial=128, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#15 0x00007fe4e189188d in rb_vm_exec (ec=0x7fe4b8005990, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#16 0x00007fe4e189217f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x7fe4b8005990, self=self@entry=140620688964304, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#17 0x00007fe4e1893223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=-835273648, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140620688964304, captured=0x5593d7aa2d50, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#18 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=-835273488, argv=0x7fe4ce36bc50, argc=&lt;optimized out&gt;, self=140620688964304, proc=0x5593d7889d78, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#19 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5593d7889d78, self=140620688964304, argc=argc@entry=-835273648, argv=argv@entry=0x7fe4ce36bcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#20 0x00007fe4e189459d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5593d7889d78, argc=argc@entry=-835273648, argv=argv@entry=0x7fe4ce36bcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#21 0x00007fe4e184d0bd in thread_do_start_proc (th=0x5593d7aa2d50) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0x7fe4ded0e700 (LWP 1825)):
#0  0x00007fe4e1319bf9 in __GI___poll (fds=fds@entry=0x7fe4dec0d660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007fe4e16fe108 in poll (__timeout=-1, __nfds=1, __fds=0x7fe4dec0d660) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=5, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7fe4dec0d8c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007fe4e184efe1 in rb_thread_io_blocking_region (func=0x7fe4e16fe040 &lt;internal_read_func&gt;, data1=0x7fe4dec0d8c0, fd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007fe4e16c8184 in rb_ensure (b_proc=b_proc@entry=0x7fe4e16fc0a0 &lt;read_internal_call&gt;, data1=data1@entry=140620966451392, e_proc=e_proc@entry=0x7fe4e181f930 &lt;rb_str_unlocktmp&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#6  0x00007fe4e1830d6b in rb_str_locktmp_ensure (str=&lt;optimized out&gt;, func=func@entry=0x7fe4e16fc0a0 &lt;read_internal_call&gt;, arg=arg@entry=140620966451392) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;string.c:2781
#7  0x00007fe4e1712630 in read_internal_locktmp (iis=0x7fe4dec0d8c0, str=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2953
#8  io_getpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;, no_exception=no_exception@entry=8, nonblock=nonblock@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2995
#9  0x00007fe4e1712b01 in io_readpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3088
#10 0x00007fe4e1880735 in vm_call_cfunc_with_frame (ec=0x5593d7a7ebb0, reg_cfp=0x7fe4ded0dc90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#11 0x00007fe4e188b7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#12 vm_exec_core (ec=0x5593d7a7ebb0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#13 0x00007fe4e189188d in rb_vm_exec (ec=0x5593d7a7ebb0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#14 0x00007fe4e189217f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5593d7a7ebb0, self=self@entry=140620966451920, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#15 0x00007fe4e1893223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=-557786032, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=140620966451920, captured=0x5593d7a7e9c0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#16 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=-557785872, argv=0x7fe4dec0dc50, argc=&lt;optimized out&gt;, self=140620966451920, proc=0x5593d7b83df8, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#17 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5593d7b83df8, self=140620966451920, argc=argc@entry=-557786032, argv=argv@entry=0x7fe4dec0dcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#18 0x00007fe4e189459d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5593d7b83df8, argc=argc@entry=-557786032, argv=argv@entry=0x7fe4dec0dcf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#19 0x00007fe4e184d0bd in thread_do_start_proc (th=0x5593d7a7e9c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0x7fe4e1de4d80 (LWP 1816)):
#0  0x00007fe4e13150b4 in __GI___libc_read (fd=8, buf=0x5593d7a10f80, nbytes=8192) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;read.c:27
#1  0x00007fe4e16fe078 in read (__nbytes=&lt;optimized out&gt;, __buf=&lt;optimized out&gt;, __fd=&lt;optimized out&gt;) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;unistd.h:44
#2  internal_read_func (ptr=ptr@entry=0x7ffc7dbc8570) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1081
#3  0x00007fe4e184efe1 in rb_thread_io_blocking_region (func=func@entry=0x7fe4e16fe040 &lt;internal_read_func&gt;, data1=data1@entry=0x7ffc7dbc8570, fd=fd@entry=8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#4  0x00007fe4e170ae18 in rb_read_internal (count=8192, buf=0x5593d7a10f80, fd=8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1136
#5  io_fillbuf (fptr=0x5593d792dc50) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2234
#6  0x00007fe4e170dac0 in io_getc (fptr=0x5593d792dc50, enc=0x5593d72677c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:4084
#7  0x00007fe4e18949c8 in vm_call0_cfunc_with_frame (argv=0x0, cd=0x7ffc7dbc8690, calling=0x7ffc7dbc86a0, ec=0x5593d71dc5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:97
#8  vm_call0_cfunc (argv=0x0, cd=0x7ffc7dbc8690, calling=0x7ffc7dbc86a0, ec=0x5593d71dc5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:111
#9  vm_call0_body (argv=0x0, cd=0x7ffc7dbc8690, calling=0x7ffc7dbc86a0, ec=0x5593d71dc5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:146
#10 rb_vm_call0 (ec=ec@entry=0x5593d71dc5b0, recv=recv@entry=94093464609160, id=id@entry=15969, argc=argc@entry=0, argv=argv@entry=0x0, me=me@entry=0x5593d726a640, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:59
#11 0x00007fe4e18951f5 in rb_vm_call_kw (ec=ec@entry=0x5593d71dc5b0, recv=recv@entry=94093464609160, id=id@entry=15969, argc=argc@entry=0, argv=argv@entry=0x0, me=me@entry=0x5593d726a640, kw_splat=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:239
#12 0x00007fe4e1896a59 in rb_call0 (self=&lt;optimized out&gt;, call_scope=CALL_FCALL, argv=0x0, argc=0, mid=15969, recv=94093464609160, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:361
#13 rb_call (scope=CALL_FCALL, argv=0x0, argc=0, mid=15969, recv=94093464609160) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:689
#14 rb_funcallv (recv=94093464609160, mid=15969, argc=0, argv=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:930
#15 0x00007fe4e16c7fa0 in rb_protect (proc=proc@entry=0x7fe4cd71d000 &lt;getc_call&gt;, data=data@entry=94093464609160, pstate=pstate@entry=0x7ffc7dbc894c) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1096
#16 0x00007fe4cd71f0bf in ttymode (io=io@entry=94093464609160, func=func@entry=0x7fe4cd71d000 &lt;getc_call&gt;, farg=farg@entry=94093464609160, arg=0x7ffc7dbc8a5c, setter=0x7fe4cd71cf70 &lt;set_rawmode&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;ext&#x2F;io&#x2F;console&#x2F;console.c:314
#17 0x00007fe4cd71f83f in console_getch (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=94093464609160) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;ext&#x2F;io&#x2F;console&#x2F;console.c:508
#18 0x00007fe4e1880735 in vm_call_cfunc_with_frame (ec=ec@entry=0x5593d71dc5b0, reg_cfp=reg_cfp@entry=0x7fe4e1de2c20, calling=calling@entry=0x7ffc7dbc8d00, cd=cd@entry=0x5593d7ac0e70) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#19 0x00007fe4e18809c5 in vm_call_cfunc (ec=ec@entry=0x5593d71dc5b0, reg_cfp=reg_cfp@entry=0x7fe4e1de2c20, calling=calling@entry=0x7ffc7dbc8d00, cd=cd@entry=0x5593d7ac0e70) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#20 0x00007fe4e189abfe in vm_call_method_each_type (ec=ec@entry=0x5593d71dc5b0, cfp=cfp@entry=0x7fe4e1de2c20, calling=0x7ffc7dbc8d00, cd=0x5593d7ac0e70) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#21 0x00007fe4e189b353 in vm_call_method (ec=0x5593d71dc5b0, cfp=0x7fe4e1de2c20, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#22 0x00007fe4e188b7e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#23 vm_exec_core (ec=0x5593d71dc5b0, initial=94093466210176, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#24 0x00007fe4e189188d in rb_vm_exec (ec=ec@entry=0x5593d71dc5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#25 0x00007fe4e189217f in invoke_block (ec=ec@entry=0x5593d71dc5b0, iseq=iseq@entry=0x5593d71f3b80, self=self@entry=94093461118320, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#26 0x00007fe4e1893963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc7dbc8f00, argc=1, self=94093461118320, captured=&lt;optimized out&gt;, ec=0x5593d71dc5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#27 invoke_block_from_c_bh (ec=0x5593d71dc5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc7dbc8f60, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#28 0x00007fe4e1893c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc7dbc8f60, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#29 rb_yield_0 (argv=0x7ffc7dbc8f60, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#30 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#31 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#32 0x00007fe4e1633ebc in rb_ary_collect (ary=94093467725640) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#33 0x00007fe4e1880735 in vm_call_cfunc_with_frame (ec=0x5593d71dc5b0, reg_cfp=0x7fe4e1de2de0, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#34 0x00007fe4e188b8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#35 vm_exec_core (ec=0x5593d71dc5b0, initial=94093466210176, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#36 0x00007fe4e1892015 in rb_vm_exec (ec=ec@entry=0x5593d71dc5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#37 0x00007fe4e189217f in invoke_block (ec=ec@entry=0x5593d71dc5b0, iseq=iseq@entry=0x5593d7219218, self=self@entry=94093461118320, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#38 0x00007fe4e1893963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7ffc7dbc92f0, argc=1, self=94093461118320, captured=&lt;optimized out&gt;, ec=0x5593d71dc5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#39 invoke_block_from_c_bh (ec=0x5593d71dc5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7ffc7dbc9350, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#40 0x00007fe4e1893c7c in vm_yield (argc=1, kw_splat=0, argv=0x7ffc7dbc9350, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#41 rb_yield_0 (argv=0x7ffc7dbc9350, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#42 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#43 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#44 0x00007fe4e1633ebc in rb_ary_collect (ary=94093467729760) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#45 0x00007fe4e1880735 in vm_call_cfunc_with_frame (ec=0x5593d71dc5b0, reg_cfp=0x7fe4e1de2f30, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#46 0x00007fe4e188b8ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#47 vm_exec_core (ec=0x5593d71dc5b0, initial=94093466210176, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#48 0x00007fe4e1892015 in rb_vm_exec (ec=0x5593d71dc5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#49 0x00007fe4e189c9c0 in rb_iseq_eval_main (iseq=iseq@entry=0x5593d72198a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:2239
#50 0x00007fe4e16c45ba in rb_ec_exec_node (ec=ec@entry=0x5593d71dc5b0, n=n@entry=0x5593d72198a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:297
#51 0x00007fe4e16ca838 in ruby_run_node (n=0x5593d72198a8) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:355
#52 0x00005593d6faba1f in main (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;main.c:50
&gt;&gt;&gt; Dump Ruby level backtrace
th: 0x5593d71dbf50, native_id: 0x7fe4e1de4d80
-- Control frame information -----------------------------------------------
c:0020 p:---- s:0130 e:000129 CFUNC  :getc
  me:
    called_id: getc, type: cfunc
    owner class: 0x00005593d726b7c0 [3LM   ] T_CLASS IO
  self: 0x00005593d788a188 [0    U] T_FILE (File)
c:0019 p:---- s:0127 e:000126 CFUNC  :getch
  me:
    called_id: getch, type: cfunc
    owner class: 0x00005593d726b7c0 [3LM   ] T_CLASS IO
  self: 0x00005593d788a188 [0    U] T_FILE (File)
c:0018 p:0074 s:0122 E:001750 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;io&#x2F;console&#x2F;test_io_console.rb:88
  me:
    called_id: test_raw_minchar, type: iseq
    owner class: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
  self: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
  lvars:
    m: 0x00005593d788a200 [0    U] T_FILE (IO)
    s: 0x00005593d788a188 [0    U] T_FILE (File)
    len: T_FIXNUM 0
    main: 0x00005593d724b498 [0LM  U] VM&#x2F;thread (Thread)VM&#x2F;thread
    go: T_FALSE
    th: 0x00005593d7889c88 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
c:0017 p:0026 s:0111 e:000110 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;io&#x2F;console&#x2F;test_io_console.rb:406
  me:
    called_id: helper, type: iseq
    owner class: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
  self: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
  lvars:
    m: 0x00005593d788a200 [0    U] T_FILE (IO)
    s: 0x00005593d788a188 [0    U] T_FILE (File)
c:0016 p:0021 s:0105 E:0000a8 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;io&#x2F;console&#x2F;test_io_console.rb:69
  me:
    called_id: test_raw_minchar, type: iseq
    owner class: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
  self: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
  lvars:
    q: 0x00005593d788a2a0 [0     ] queue (Thread::Queue)queue
c:0015 p:0052 s:0100 e:000099 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1231
  me:
    called_id: run_test, type: iseq
    owner class: 0x00005593d742a9a8 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
  lvars:
    name: 0x00005593d7b83088 [1     ] T_STRING (String)test_raw_minchar
    progname: 0x00005593d723a7b0 [3LM   ] T_STRING (String)&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb
c:0014 p:0065 s:0094 e:000093 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1320
  me:
    called_id: run, type: iseq
    owner class: 0x00005593d742a9a8 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
  lvars:
    runner: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
    start_time: 0x00005593d788a818 [0    U] time (Time)time
    result: 0x00005593d7230b20 [3LM   ] T_STRING (String)
    time: T_NIL
    e: T_NIL
c:0013 p:0013 s:0085 e:000084 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;testcase.rb:18
  me:
    called_id: run, type: iseq
    owner class: 0x00005593d722aba8 [3LM   ] T_CLASS Test::Unit::TestCase
  self: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
  lvars:
    runner: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
c:0012 p:0077 s:0080 e:000079 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:969 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005593d742bbf0 [3LM   ] T_CLASS MiniTest::Unit
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    method: 0x00005593d7b83088 [1     ] T_STRING (String)test_raw_minchar
    inst: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
    start_time: T_NIL
    result: T_NIL
c:0011 p:---- s:0073 e:000072 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x00005593d7279c58 [3LM   ] T_CLASS Array
  self: 0x00005593d7b82f48 [1     ] T_ARRAY (Array)[   ] len: 23, capa:37 ptr:0x00005593d79e83d0
c:0010 p:0006 s:0069 e:000068 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:962
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005593d742bbf0 [3LM   ] T_CLASS MiniTest::Unit
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    assertions: T_NIL
c:0009 p:0163 s:0065 E:000a00 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:989
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005593d742bbf0 [3LM   ] T_CLASS MiniTest::Unit
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    suite: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
    type: T_SYMBOL test
    header: 0x00005593d7b83588 [1     ] T_STRING (String)test_suite_header
    filter: 0x00005593d768aa90 [3LM   ] T_REGEXP 
    all_test_methods: 0x00005593d7b82f98 [1     ] T_ARRAY (Array)[   ] len: 23, capa:23 ptr:0x00005593d79e81c0
    filtered_test_methods: 0x00005593d7b82f48 [1     ] T_ARRAY (Array)[   ] len: 23, capa:37 ptr:0x00005593d79e83d0
    leakchecker: 0x00005593d7b82b38 [1     ] T_OBJECT (LeakChecker)len:7 ptr:0x00005593d79e8ba0
    continuation: 0x00005593d7b819b8 [1     ] proc (Proc) block in _run_suite@&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:961
c:0008 p:0042 s:0053 e:000052 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1084
  me:
    called_id: orig_run_suite, type: iseq
    owner class: 0x00005593d7221e40 [3LM   ] T_MODULE (Module)Test::Unit::ExcludesOption
    defined_class: 0x00005593d7221238 [3LM   ] T_ICLASS src:Test::Unit::ExcludesOption
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    suite: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
    type: T_SYMBOL test
    ex: 0x00005593d7b83b50 [3LM R ] T_STRUCT 
c:0007 p:0103 s:0046 E:001c30 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:55
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005593d75f3398 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    suite: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
    type: T_SYMBOL test
    orig_testout: 0x00005593d7269a10 [0LM  U] T_FILE (IO)
    i: 0x00005593d7b83e98 [0    U] T_FILE (IO)
    o: 0x00005593d7b83e70 [0LM  U] T_FILE (IO)
    orig_stdin: 0x00005593d7269a60 [0LM  U] T_FILE (IO)
    orig_stdout: 0x00005593d7269a10 [0LM  U] T_FILE (IO)
    th: 0x00005593d7b83e20 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    e: T_FIXNUM 0
    f: T_FIXNUM 0
    s: T_FIXNUM 1
    result: T_NIL
c:0006 p:0008 s:0030 e:000029 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:31 [FINISH]
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x00005593d75f3398 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    suite: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
c:0005 p:---- s:0026 e:000025 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x00005593d7279c58 [3LM   ] T_CLASS Array
  self: 0x00005593d7b83f60 [1     ] T_ARRAY (Array)[E ] len: 1 (embed)
c:0004 p:0005 s:0022 e:000021 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:30
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x00005593d75f3398 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    suites: 0x00005593d7b83f60 [1     ] T_ARRAY (Array)[E ] len: 1 (embed)
    type: T_SYMBOL test
c:0003 p:0259 s:0016 E:001770 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:125
  me:
    called_id: run, type: iseq
    owner class: 0x00005593d75f3398 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    args: 0x00005593d7268e58 [3LM   ] T_ARRAY [E ] len: 0 (embed)
    buf: 0x00005593d7b41340 [3LM   ] T_STRING (String)run &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;io&#x2F;console&#x2F;test_io_console.rb test

    suites: 0x00005593d7b411d8 [3LM   ] T_ARRAY (Array)[   ] len: 39, capa:39 ptr:0x00005593d7915520
    e: T_NIL
    trace: T_NIL
    err: T_NIL
c:0002 p:0142 s:0006 E:001310 EVAL   &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:205 [FINISH]
  self: 0x00005593d7298450 [3LM   ] T_OBJECT (embed) len:3
c:0001 p:0000 s:0003 E:000be0 (none) [FINISH]
  self: 0x00005593d7298450 [3LM   ] T_OBJECT (embed) len:3

th: 0x5593d7a7e9c0, native_id: 0x7fe4ded0e700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0012 e:000011 CFUNC  :readpartial
  me:
    called_id: readpartial, type: cfunc
    owner class: 0x00005593d726b7c0 [3LM   ] T_CLASS IO
  self: 0x00005593d7b83e98 [0    U] T_FILE (IO)
c:0002 p:0036 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:45 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005593d75f3398 [3LM   ] T_CLASS Test::Unit::Worker
  self: 0x00005593d7535d70 [3LM   ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005593d7640fb0
  lvars:
    buf: 0x00005593d77cb468 [0     ] T_STRING (String).
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x5593d7aa2d50, native_id: 0x7fe4ce46c700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0010 e:000009 CFUNC  :pop
  me:
    called_id: pop, type: cfunc
    owner class: 0x00005593d7249530 [3LM R ] T_CLASS Thread::Queue
  self: 0x00005593d788a2a0 [0     ] queue (Thread::Queue)queue
c:0002 p:0006 s:0006 e:000005 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;io&#x2F;console&#x2F;test_io_console.rb:75 [FINISH]
  me:
    called_id: test_raw_minchar, type: iseq
    owner class: 0x00005593d7b71c70 [3LM R ] T_CLASS TestIO_Console
  self: 0x00005593d788a840 [0     ] T_OBJECT (TestIO_Console)len:7 ptr:0x00005593d76ec310
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

$1 = 0
&quot;&gt;&gt;&gt; Finish
&quot;
[nil, 1816]
&quot;gdb -p 1817 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
[New LWP 1822]
[New LWP 1864]
[Thread debugging using libthread_db enabled]
Using host libthread_db library &quot;&#x2F;lib&#x2F;x86_64-linux-gnu&#x2F;libthread_db.so.1&quot;.
39	..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c: No such file or directory.
0x00007efe774e6cf6 in __GI_ppoll (fds=fds@entry=0x7fffab2bf840, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
&gt;&gt;&gt; Threads  Id   Target Id         Frame 
* 1    Thread 0x7efe77fb1d80 (LWP 1817) &quot;ruby&quot; 0x00007efe774e6cf6 in __GI_ppoll (fds=fds@entry=0x7fffab2bf840, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
  2    Thread 0x7efe74ed8700 (LWP 1822) &quot;parallel.rb:43&quot; 0x00007efe774e6bf9 in __GI___poll (fds=fds@entry=0x7efe74dd7660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
  3    Thread 0x7efe741a3700 (LWP 1864) &quot;extservm.rb:63&quot; 0x00007efe774e6cf6 in __GI_ppoll (fds=fds@entry=0x7efe740a25d8, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
&gt;&gt;&gt; Machine level backtrace

Thread 3 (Thread 0x7efe741a3700 (LWP 1864)):
#0  0x00007efe774e6cf6 in __GI_ppoll (fds=fds@entry=0x7efe740a25d8, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007efe77a17bb7 in rb_sigwait_sleep (th=th@entry=0x5649dfa95fc0, sigwait_fd=sigwait_fd@entry=3, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2014
#2  0x00007efe77a18794 in native_sleep (th=&lt;optimized out&gt;, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2135
#3  0x00007efe77a1cd13 in queue_sleep () at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.h:93
#4  0x00007efe77895184 in rb_ensure (b_proc=b_proc@entry=0x7efe77a1cc60 &lt;queue_sleep&gt;, data1=data1@entry=94875283872520, e_proc=e_proc@entry=0x7efe77a11f70 &lt;queue_sleep_done&gt;, data2=data2@entry=139631333615504) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#5  0x00007efe77a13e03 in queue_do_pop (self=94875283872520, q=0x5649dfa95e00, should_block=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_sync.c:969
#6  0x00007efe77a4d735 in vm_call_cfunc_with_frame (ec=ec@entry=0x5649dfa0d0b0, reg_cfp=reg_cfp@entry=0x7efe741a2c90, calling=calling@entry=0x7efe740a2a50, cd=cd@entry=0x5649df6f76b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#7  0x00007efe77a4d9c5 in vm_call_cfunc (ec=ec@entry=0x5649dfa0d0b0, reg_cfp=reg_cfp@entry=0x7efe741a2c90, calling=calling@entry=0x7efe740a2a50, cd=cd@entry=0x5649df6f76b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2631
#8  0x00007efe77a67bfe in vm_call_method_each_type (ec=ec@entry=0x5649dfa0d0b0, cfp=cfp@entry=0x7efe741a2c90, calling=0x7efe740a2a50, cd=0x5649df6f76b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3109
#9  0x00007efe77a68353 in vm_call_method (ec=0x5649dfa0d0b0, cfp=0x7efe741a2c90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:3231
#10 0x00007efe77a587e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#11 vm_exec_core (ec=0x5649dfa0d0b0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#12 0x00007efe77a5e88d in rb_vm_exec (ec=0x5649dfa0d0b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#13 0x00007efe77a5f17f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5649dfa0d0b0, self=self@entry=139631333616336, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#14 0x00007efe77a60223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=1946823760, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=139631333616336, captured=0x5649dfa95fc0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#15 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=1946823920, argv=0x7efe740a2c50, argc=&lt;optimized out&gt;, self=139631333616336, proc=0x5649df97da40, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#16 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5649df97da40, self=139631333616336, argc=argc@entry=1946823760, argv=argv@entry=0x7efe740a2cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#17 0x00007efe77a6159d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5649df97da40, argc=argc@entry=1946823760, argv=argv@entry=0x7efe740a2cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#18 0x00007efe77a1a0bd in thread_do_start_proc (th=0x5649dfa95fc0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0x7efe74ed8700 (LWP 1822)):
#0  0x00007efe774e6bf9 in __GI___poll (fds=fds@entry=0x7efe74dd7660, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;poll.c:29
#1  0x00007efe778cb108 in poll (__timeout=-1, __nfds=1, __fds=0x7efe74dd7660) at &#x2F;usr&#x2F;include&#x2F;x86_64-linux-gnu&#x2F;bits&#x2F;poll2.h:46
#2  nogvl_wait_for_single_fd (events=1, fd=5, th=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:11091
#3  internal_read_func (ptr=ptr@entry=0x7efe74dd78c0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:1085
#4  0x00007efe77a1bfe1 in rb_thread_io_blocking_region (func=0x7efe778cb040 &lt;internal_read_func&gt;, data1=0x7efe74dd78c0, fd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1770
#5  0x00007efe77895184 in rb_ensure (b_proc=b_proc@entry=0x7efe778c90a0 &lt;read_internal_call&gt;, data1=data1@entry=139631347464384, e_proc=e_proc@entry=0x7efe779ec930 &lt;rb_str_unlocktmp&gt;, data2=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#6  0x00007efe779fdd6b in rb_str_locktmp_ensure (str=&lt;optimized out&gt;, func=func@entry=0x7efe778c90a0 &lt;read_internal_call&gt;, arg=arg@entry=139631347464384) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;string.c:2781
#7  0x00007efe778df630 in read_internal_locktmp (iis=0x7efe74dd78c0, str=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2953
#8  io_getpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;, no_exception=no_exception@entry=8, nonblock=nonblock@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:2995
#9  0x00007efe778dfb01 in io_readpartial (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, io=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;io.c:3088
#10 0x00007efe77a4d735 in vm_call_cfunc_with_frame (ec=0x5649df9bbbe0, reg_cfp=0x7efe74ed7c90, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#11 0x00007efe77a587e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#12 vm_exec_core (ec=0x5649df9bbbe0, initial=1, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#13 0x00007efe77a5e88d in rb_vm_exec (ec=0x5649df9bbbe0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#14 0x00007efe77a5f17f in invoke_block (ec=&lt;optimized out&gt;, iseq=iseq@entry=0x5649df9bbbe0, self=self@entry=139631347464912, cref=cref@entry=0x0, type=&lt;optimized out&gt;, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#15 0x00007efe77a60223 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=&lt;optimized out&gt;, kw_splat=1960672336, argv=&lt;optimized out&gt;, argc=&lt;optimized out&gt;, self=139631347464912, captured=0x5649dfa9e5d0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#16 invoke_block_from_c_proc (me=0x0, is_lambda=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;, kw_splat=1960672496, argv=0x7efe74dd7c50, argc=&lt;optimized out&gt;, self=139631347464912, proc=0x5649df97fb10, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1256
#17 vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5649df97fb10, self=139631347464912, argc=argc@entry=1960672336, argv=argv@entry=0x7efe74dd7cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1285
#18 0x00007efe77a6159d in rb_vm_invoke_proc (ec=&lt;optimized out&gt;, proc=proc@entry=0x5649df97fb10, argc=argc@entry=1960672336, argv=argv@entry=0x7efe74dd7cf0, kw_splat=&lt;optimized out&gt;, passed_block_handler=passed_block_handler@entry=0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1306
#19 0x00007efe77a1a0bd in thread_do_start_proc (th=0x5649dfa9e5d0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:721
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0x7efe77fb1d80 (LWP 1817)):
#0  0x00007efe774e6cf6 in __GI_ppoll (fds=fds@entry=0x7fffab2bf840, nfds=nfds@entry=2, timeout=&lt;optimized out&gt;, sigmask=sigmask@entry=0x0) at ..&#x2F;sysdeps&#x2F;unix&#x2F;sysv&#x2F;linux&#x2F;ppoll.c:39
#1  0x00007efe77a17850 in native_ppoll_sleep (th=0x5649df03cf50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2106
#2  0x00007efe77a18895 in native_sleep (th=th@entry=0x5649df03cf50, rel=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread_pthread.c:2146
#3  0x00007efe77a1cec5 in thread_join_sleep (arg=arg@entry=140736065174016) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1152
#4  0x00007efe77895184 in rb_ensure (b_proc=b_proc@entry=0x7efe77a1cda0 &lt;thread_join_sleep&gt;, data1=data1@entry=140736065174016, e_proc=e_proc@entry=0x7efe77a11fe0 &lt;remove_from_join_list&gt;, data2=data2@entry=140736065174016) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:1138
#5  0x00007efe77a13658 in thread_join (target_th=0x5649dfa95fc0, rel=rel@entry=0x0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1197
#6  0x00007efe77a1378c in thread_join_m (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;, self=94875283872360) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;thread.c:1294
#7  0x00007efe77a4d735 in vm_call_cfunc_with_frame (ec=0x5649df03d5b0, reg_cfp=0x7efe77fafc20, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#8  0x00007efe77a587e0 in vm_sendish (block_handler=&lt;optimized out&gt;, method_explorer=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#9  vm_exec_core (ec=0x5649df03d5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:789
#10 0x00007efe77a5e88d in rb_vm_exec (ec=ec@entry=0x5649df03d5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#11 0x00007efe77a5f17f in invoke_block (ec=ec@entry=0x5649df03d5b0, iseq=iseq@entry=0x5649df051458, self=self@entry=94875283874120, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#12 0x00007efe77a60963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7fffab2bfd80, argc=1, self=94875283874120, captured=&lt;optimized out&gt;, ec=0x5649df03d5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#13 invoke_block_from_c_bh (ec=0x5649df03d5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7fffab2bfde0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#14 0x00007efe77a60c7c in vm_yield (argc=1, kw_splat=0, argv=0x7fffab2bfde0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#15 rb_yield_0 (argv=0x7fffab2bfde0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#16 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#17 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#18 0x00007efe777fb7ec in rb_ary_each (ary=94875283900760) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:2379
#19 0x00007efe77a4d735 in vm_call_cfunc_with_frame (ec=0x5649df03d5b0, reg_cfp=0x7efe77fafd00, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#20 0x00007efe77a588ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#21 vm_exec_core (ec=0x5649df03d5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#22 0x00007efe77a5f015 in rb_vm_exec (ec=ec@entry=0x5649df03d5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#23 0x00007efe77a5f17f in invoke_block (ec=ec@entry=0x5649df03d5b0, iseq=iseq@entry=0x5649df053b18, self=self@entry=94875277684480, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#24 0x00007efe77a60963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7fffab2c0160, argc=1, self=94875277684480, captured=&lt;optimized out&gt;, ec=0x5649df03d5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#25 invoke_block_from_c_bh (ec=0x5649df03d5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7fffab2c01c0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#26 0x00007efe77a60c7c in vm_yield (argc=1, kw_splat=0, argv=0x7fffab2c01c0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#27 rb_yield_0 (argv=0x7fffab2c01c0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#28 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#29 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#30 0x00007efe77800ebc in rb_ary_collect (ary=94875283879080) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#31 0x00007efe77a4d735 in vm_call_cfunc_with_frame (ec=0x5649df03d5b0, reg_cfp=0x7efe77fafde0, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#32 0x00007efe77a588ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#33 vm_exec_core (ec=0x5649df03d5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#34 0x00007efe77a5e88d in rb_vm_exec (ec=ec@entry=0x5649df03d5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1982
#35 0x00007efe77a5f17f in invoke_block (ec=ec@entry=0x5649df03d5b0, iseq=iseq@entry=0x5649df079200, self=self@entry=94875277684480, cref=cref@entry=0x0, type=type@entry=572653569, opt_pc=0, captured=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1084
#36 0x00007efe77a60963 in invoke_iseq_block_from_c (me=0x0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argv=0x7fffab2c0550, argc=1, self=94875277684480, captured=&lt;optimized out&gt;, ec=0x5649df03d5b0) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1156
#37 invoke_block_from_c_bh (ec=0x5649df03d5b0, block_handler=&lt;optimized out&gt;, argv=argv@entry=0x7fffab2c05b0, force_blockarg=force_blockarg@entry=0, is_lambda=&lt;optimized out&gt;, cref=0x0, passed_block_handler=0, kw_splat=0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1174
#38 0x00007efe77a60c7c in vm_yield (argc=1, kw_splat=0, argv=0x7fffab2c05b0, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1219
#39 rb_yield_0 (argv=0x7fffab2c05b0, argc=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1141
#40 rb_yield_1 (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1147
#41 rb_yield (val=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_eval.c:1157
#42 0x00007efe77800ebc in rb_ary_collect (ary=94875283881080) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;array.c:3491
#43 0x00007efe77a4d735 in vm_call_cfunc_with_frame (ec=0x5649df03d5b0, reg_cfp=0x7efe77faff30, calling=&lt;optimized out&gt;, cd=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:2610
#44 0x00007efe77a588ca in vm_sendish (method_explorer=&lt;optimized out&gt;, block_handler=&lt;optimized out&gt;, cd=&lt;optimized out&gt;, reg_cfp=&lt;optimized out&gt;, ec=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm_insnhelper.c:4194
#45 vm_exec_core (ec=0x5649df03d5b0, initial=2, initial@entry=0) at ..&#x2F;..&#x2F;src&#x2F;trunk-no-theap&#x2F;insns.def:770
#46 0x00007efe77a5f015 in rb_vm_exec (ec=0x5649df03d5b0, mjit_enable_p=mjit_enable_p@entry=1) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:1991
#47 0x00007efe77a699c0 in rb_iseq_eval_main (iseq=iseq@entry=0x5649df079890) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;vm.c:2239
#48 0x00007efe778915ba in rb_ec_exec_node (ec=ec@entry=0x5649df03d5b0, n=n@entry=0x5649df079890) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:297
#49 0x00007efe77897838 in ruby_run_node (n=0x5649df079890) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;eval.c:355
#50 0x00005649deae1a1f in main (argc=&lt;optimized out&gt;, argv=&lt;optimized out&gt;) at &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;main.c:50
&gt;&gt;&gt; Dump Ruby level backtrace
th: 0x5649df03cf50, native_id: 0x7efe77fb1d80
-- Control frame information -----------------------------------------------
c:0019 p:---- s:0115 e:000114 CFUNC  :join
  me:
    called_id: join, type: cfunc
    owner class: 0x00005649df0b16a0 [3LM R ] T_CLASS Thread
  self: 0x00005649df97da68 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
c:0018 p:0046 s:0111 e:000110 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;drbtest.rb:45
  me:
    called_id: finish, type: iseq
    owner class: 0x00005649df6513f8 [2     ] T_CLASS DRbTests::DRbService
  self: 0x00005649df97dec8 [0     ] T_OBJECT (DRbTests::DRbSSLService)(embed) len:3
c:0017 p:0107 s:0107 e:000106 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;drbtest.rb:117
  me:
    called_id: teardown, type: iseq
    owner class: 0x00005649df659198 [2     ] T_MODULE (Module)DRbTests::DRbBase
    defined_class: 0x00005649df97fe30 [2     ] T_ICLASS src:DRbTests::DRbBase
  self: 0x00005649df97e148 [0     ] T_OBJECT (DRbTests::TestDRbSSLAry)len:10 ptr:0x00005649dfab5a80
  lvars:
    signal: T_SYMBOL TERM
c:0016 p:0006 s:0102 e:000101 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1335 [FINISH]
  me:
    called_id: run, type: iseq
    owner class: 0x00005649df28ea40 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005649df97e148 [0     ] T_OBJECT (DRbTests::TestDRbSSLAry)len:10 ptr:0x00005649dfab5a80
  lvars:
    hook: 0x00005649df0515c0 [3LM   ] T_STRING (String)teardown
c:0015 p:---- s:0098 e:000097 CFUNC  :each
  me:
    called_id: each, type: cfunc
    owner class: 0x00005649df0d9c68 [3LM R ] T_CLASS Array
  self: 0x00005649df984958 [0     ] T_ARRAY (Array)[E ] len: 3 (embed)
c:0014 p:0122 s:0094 e:000093 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:1333
  me:
    called_id: run, type: iseq
    owner class: 0x00005649df28ea40 [3LM R ] T_CLASS MiniTest::Unit::TestCase
  self: 0x00005649df97e148 [0     ] T_OBJECT (DRbTests::TestDRbSSLAry)len:10 ptr:0x00005649dfab5a80
  lvars:
    runner: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
    start_time: 0x00005649df97e0d0 [0    U] time (Time)time
    result: 0x00005649df984980 [0     ] T_STRING (String)E
    time: T_FLOAT
    e: 0x00005649df985100 [0     ] T_OBJECT (RuntimeError)len:5 ptr:0x00005649dfabd740
c:0013 p:0013 s:0085 e:000084 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;testcase.rb:18
  me:
    called_id: run, type: iseq
    owner class: 0x00005649df08ad98 [3LM   ] T_CLASS Test::Unit::TestCase
  self: 0x00005649df97e148 [0     ] T_OBJECT (DRbTests::TestDRbSSLAry)len:10 ptr:0x00005649dfab5a80
  lvars:
    runner: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
c:0012 p:0077 s:0080 e:000079 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:969 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005649df28fc88 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    method: 0x00005649df97f638 [0     ] T_STRING (String)test_01
    inst: 0x00005649df97e148 [0     ] T_OBJECT (DRbTests::TestDRbSSLAry)len:10 ptr:0x00005649dfab5a80
    start_time: T_NIL
    result: T_NIL
c:0011 p:---- s:0073 e:000072 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x00005649df0d9c68 [3LM R ] T_CLASS Array
  self: 0x00005649df97f4a8 [0     ] T_ARRAY (Array)[   ] len: 6, capa:20 ptr:0x00005649dfa01650
c:0010 p:0006 s:0069 e:000068 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:962
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005649df28fc88 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    assertions: T_NIL
c:0009 p:0163 s:0065 E:000a30 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:989
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005649df28fc88 [3LM R ] T_CLASS MiniTest::Unit
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    suite: 0x00005649df97ff20 [2     ] T_CLASS DRbTests::TestDRbSSLAry
    type: T_SYMBOL test
    header: 0x00005649df97f818 [0     ] T_STRING (String)test_suite_header
    filter: 0x00005649df4eb3d8 [3LM   ] T_REGEXP 
    all_test_methods: 0x00005649df97f4f8 [0     ] T_ARRAY (Array)[   ] len: 6, capa:6 ptr:0x00005649dfa91e90
    filtered_test_methods: 0x00005649df97f4a8 [0     ] T_ARRAY (Array)[   ] len: 6, capa:20 ptr:0x00005649dfa01650
    leakchecker: 0x00005649df97f318 [0     ] T_OBJECT (LeakChecker)len:7 ptr:0x00005649dfa93ff0
    continuation: 0x00005649df97e1c0 [0     ] proc (Proc) block in _run_suite@&#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;minitest&#x2F;unit.rb:961
c:0008 p:0042 s:0053 e:000052 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit.rb:1084
  me:
    called_id: orig_run_suite, type: iseq
    owner class: 0x00005649df080438 [3LM   ] T_MODULE (Module)Test::Unit::ExcludesOption
    defined_class: 0x00005649df079ca0 [3LM   ] T_ICLASS src:Test::Unit::ExcludesOption
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    suite: 0x00005649df97ff20 [2     ] T_CLASS DRbTests::TestDRbSSLAry
    type: T_SYMBOL test
    ex: T_NIL
c:0007 p:0103 s:0046 E:0026a0 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:55
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005649df4573e0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    suite: 0x00005649df97ff20 [2     ] T_CLASS DRbTests::TestDRbSSLAry
    type: T_SYMBOL test
    orig_testout: 0x00005649df0c99f8 [0LM  U] T_FILE (IO)
    i: 0x00005649df97fbb0 [0    U] T_FILE (IO)
    o: 0x00005649df97fb88 [0    U] T_FILE (IO)
    orig_stdin: 0x00005649df0c9a48 [0LM  U] T_FILE (IO)
    orig_stdout: 0x00005649df0c99f8 [0LM  U] T_FILE (IO)
    th: 0x00005649df97fb38 [0    U] VM&#x2F;thread (Thread)VM&#x2F;thread
    e: T_FIXNUM 0
    f: T_FIXNUM 0
    s: T_FIXNUM 0
    result: T_NIL
c:0006 p:0008 s:0030 e:000029 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:31 [FINISH]
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x00005649df4573e0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    suite: 0x00005649df97ff20 [2     ] T_CLASS DRbTests::TestDRbSSLAry
c:0005 p:---- s:0026 e:000025 CFUNC  :map
  me:
    called_id: map, type: cfunc
    owner class: 0x00005649df0d9c68 [3LM R ] T_CLASS Array
  self: 0x00005649df97fc78 [0     ] T_ARRAY (Array)[E ] len: 2 (embed)
c:0004 p:0005 s:0022 e:000021 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:30
  me:
    called_id: _run_suites, type: iseq
    owner class: 0x00005649df4573e0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    suites: 0x00005649df97fc78 [0     ] T_ARRAY (Array)[E ] len: 2 (embed)
    type: T_SYMBOL test
c:0003 p:0259 s:0016 e:000015 METHOD &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:125
  me:
    called_id: run, type: iseq
    owner class: 0x00005649df4573e0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    args: 0x00005649df0c8e40 [3LM   ] T_ARRAY [E ] len: 0 (embed)
    buf: 0x00005649df4c9198 [0     ] T_STRING (String)run &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;test&#x2F;drb&#x2F;test_drbssl.rb test

    suites: 0x00005649df4c8bd0 [0     ] T_ARRAY (Array)[   ] len: 35, capa:35 ptr:0x00005649df8953b0
    e: T_NIL
    trace: T_NIL
    err: T_NIL
c:0002 p:0142 s:0006 e:000005 EVAL   &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:205 [FINISH]
  self: 0x00005649df0f8438 [3LM   ] T_OBJECT (embed) len:3
c:0001 p:0000 s:0003 E:0022a0 (none) [FINISH]
  self: 0x00005649df0f8438 [3LM   ] T_OBJECT (embed) len:3

th: 0x5649dfa9e5d0, native_id: 0x7efe74ed8700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0012 e:000011 CFUNC  :readpartial
  me:
    called_id: readpartial, type: cfunc
    owner class: 0x00005649df0cb7a8 [3LM R ] T_CLASS IO
  self: 0x00005649df97fbb0 [0    U] T_FILE (IO)
c:0002 p:0036 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;tool&#x2F;lib&#x2F;test&#x2F;unit&#x2F;parallel.rb:45 [FINISH]
  me:
    called_id: _run_suite, type: iseq
    owner class: 0x00005649df4573e0 [3LM R ] T_CLASS Test::Unit::Worker
  self: 0x00005649df396f00 [3LM R ] T_OBJECT (Test::Unit::Worker)len:28 ptr:0x00005649df4161f0
  lvars:
    buf: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

th: 0x5649dfa95fc0, native_id: 0x7efe741a3700
-- Control frame information -----------------------------------------------
c:0003 p:---- s:0011 e:000010 CFUNC  :pop
  me:
    called_id: pop, type: cfunc
    owner class: 0x00005649df0a9518 [3LM R ] T_CLASS Thread::Queue
  self: 0x00005649df97db08 [0     ] queue (Thread::Queue)queue
c:0002 p:0024 s:0007 e:000006 BLOCK  &#x2F;tmp&#x2F;ruby&#x2F;v3&#x2F;src&#x2F;trunk-no-theap&#x2F;lib&#x2F;drb&#x2F;extservm.rb:64 [FINISH]
  me:
    called_id: invoke_thread, type: iseq
    owner class: 0x00005649df648c58 [2     ] T_CLASS DRb::ExtServManager
  self: 0x00005649df97de78 [0     ] T_OBJECT (DRb::ExtServManager)len:10 ptr:0x00005649dfa96190
  lvars:
    name: T_NIL
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
  self: T_NIL

$1 = 0
&quot;&gt;&gt;&gt; Finish
&quot;
[nil, 1817]
&quot;gdb -p 1811 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
make: *** [yes-test-all] Error 1
ptrace: No such process.
&gt;&gt;&gt; ThreadsNo threads.
&gt;&gt;&gt; Machine level backtrace
&gt;&gt;&gt; Dump Ruby level backtrace
&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript:12: Error in sourced command file:
No symbol table is loaded.  Use the &quot;file&quot; command.
[nil, 1811]
#&lt;Errno::ESRCH: No such process&gt;
&quot;gdb -p 1804 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
ptrace: No such process.
&gt;&gt;&gt; ThreadsNo threads.
&gt;&gt;&gt; Machine level backtrace
&gt;&gt;&gt; Dump Ruby level backtrace
&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript:12: Error in sourced command file:
No symbol table is loaded.  Use the &quot;file&quot; command.
[nil, 1804]
#&lt;Errno::ESRCH: No such process&gt;
&quot;gdb -p 1802 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
Could not attach to process.  If your uid matches the uid of the target
process, check the setting of &#x2F;proc&#x2F;sys&#x2F;kernel&#x2F;yama&#x2F;ptrace_scope, or try
again as the root user.  For more details, see &#x2F;etc&#x2F;sysctl.d&#x2F;10-ptrace.conf
warning: process 1802 is a zombie - the process has already terminated
ptrace: Operation not permitted.
&gt;&gt;&gt; ThreadsNo threads.
&gt;&gt;&gt; Machine level backtrace
&gt;&gt;&gt; Dump Ruby level backtrace
&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript:12: Error in sourced command file:
No symbol table is loaded.  Use the &quot;file&quot; command.
[nil, 1802]
&quot;gdb -p 3239 -x &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript -batch -quiet&quot;
ptrace: No such process.
&gt;&gt;&gt; ThreadsNo threads.
&gt;&gt;&gt; Machine level backtrace
&gt;&gt;&gt; Dump Ruby level backtrace
&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;gdbscript:12: Error in sourced command file:
No symbol table is loaded.  Use the &quot;file&quot; command.
[nil, 3239]
#&lt;Errno::ESRCH: No such process&gt;
  0.024000   0.016000  88.932000 (10814.439317)
&#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:154:in `each_line&#x27;: execution expired (Timeout::Error)
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:154:in `block (2 levels) in cmd&#x27;
	from &#x2F;usr&#x2F;lib&#x2F;ruby&#x2F;2.5.0&#x2F;timeout.rb:108:in `timeout&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:153:in `block in cmd&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:150:in `popen&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:150:in `cmd&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:293:in `block in test_all&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:220:in `block in builddir&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:219:in `chdir&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:219:in `builddir&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:292:in `test_all&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:355:in `block (4 levels) in run&#x27;
	from &#x2F;usr&#x2F;lib&#x2F;ruby&#x2F;2.5.0&#x2F;benchmark.rb:293:in `measure&#x27;
	from &#x2F;usr&#x2F;lib&#x2F;ruby&#x2F;2.5.0&#x2F;benchmark.rb:375:in `item&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:353:in `block (3 levels) in run&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:352:in `each&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:352:in `block (2 levels) in run&#x27;
	from &#x2F;usr&#x2F;lib&#x2F;ruby&#x2F;2.5.0&#x2F;benchmark.rb:173:in `benchmark&#x27;
	from &#x2F;usr&#x2F;lib&#x2F;ruby&#x2F;2.5.0&#x2F;benchmark.rb:205:in `bm&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:351:in `block in run&#x27;
	from &#x2F;usr&#x2F;lib&#x2F;ruby&#x2F;2.5.0&#x2F;benchmark.rb:293:in `measure&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:350:in `run&#x27;
	from &#x2F;home&#x2F;ko1&#x2F;ruby&#x2F;build-ruby&#x2F;build-ruby.rb:516:in `&lt;main&gt;&#x27;
total: 10869.73 sec
</pre></li>
    </ul>
</p>