Result of trunk-asserts@ruby-sp2-docker at 2023-10-08 17:56:34 +0900

NG (bf71b0eda5)[LOG]
test-all:
test-spec:

commands:

 "make update-unicode  DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
"make update-download DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
From https://github.com/ruby/rbs
 * branch              33813a60752624d58dfe5ae770b39bfaf29fbaf1 -> FETCH_HEAD
HEAD is now at 33813a60 Use valid syntax
From https://github.com/ruby/debug
 * branch            927587afb6aac69b358b86a01f602d207053e8d2 -> FETCH_HEAD
HEAD is now at 927587a Stop assuming Integer#times is written in C
"make update-rubyspec DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
"make update-src      DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
"make after-update    DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
From https://github.com/ruby/rbs
 * branch              33813a60752624d58dfe5ae770b39bfaf29fbaf1 -> FETCH_HEAD
HEAD is now at 33813a60 Use valid syntax
From https://github.com/ruby/debug
 * branch            927587afb6aac69b358b86a01f602d207053e8d2 -> FETCH_HEAD
HEAD is now at 927587a Stop assuming Integer#times is written in C
"make miniruby DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
"make ruby DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
"make all DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
"make install DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
From https://github.com/ruby/rbs
 * branch              33813a60752624d58dfe5ae770b39bfaf29fbaf1 -> FETCH_HEAD
HEAD is now at 33813a60 Use valid syntax
From https://github.com/ruby/debug
 * branch            927587afb6aac69b358b86a01f602d207053e8d2 -> FETCH_HEAD
HEAD is now at 927587a Stop assuming Integer#times is written in C
"make yes-btest TESTOPTS='-q -j4'" exit with 0.
 
"make yes-test-basic TESTS='-j4'" exit with 0.
make yes-test-all TESTOPTS='--stderr-on-failure' TESTS='-j4'
$$$ #<Timeout::Error: execution expired>
### enter analyzing mode for stuck processes
$$$ 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-asserts --incremental --process-num=4
      1  368019      12      12 ?             -1 S     1001   0:02 /tmp/ruby/build/trunk-asserts/ruby -e Signal.trap(:INT, "DEFAULT"); pipe=IO.pipe; Thread.start {Thread.pass until Thread.main.stop?; puts; STDOUT.flush}; pipe[0].read
      1  548295      12      12 ?             -1 Sl    1001   0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e       uri = ARGV[0]       DRb.start_service("druby://localhost:0")       ro = DRbObject.new_with_uri(uri)       ts = Rinda::TupleSpaceProxy.new(ro)       th = Thread.new do         ts.take([:test_take, nil])       rescue Interrupt         # Expected       end       Kernel.sleep(0.1)       th.raise(Interrupt) # causes loss of the taken tuple       ts.write([:barrier, :continue])       Kernel.sleep  druby://localhost:46415
      1  559391      12      12 ?             -1 Sl    1001   0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e       uri = ARGV[0]       DRb.start_service("druby://localhost:0")       ro = DRbObject.new_with_uri(uri)       ts = Rinda::TupleSpaceProxy.new(ro)       th = Thread.new do         ts.take([:test_take, nil])       rescue Interrupt         # Expected       end       Kernel.sleep(0.1)       th.raise(Interrupt) # causes loss of the taken tuple       ts.write([:barrier, :continue])       Kernel.sleep  druby://localhost:38831
      1  625485      12      12 ?             -1 Sl    1001   0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e       uri = ARGV[0]       DRb.start_service("druby://localhost:0")       ro = DRbObject.new_with_uri(uri)       ts = Rinda::TupleSpaceProxy.new(ro)       th = Thread.new do         ts.take([:test_take, nil])       rescue Interrupt         # Expected       end       Kernel.sleep(0.1)       th.raise(Interrupt) # causes loss of the taken tuple       ts.write([:barrier, :continue])       Kernel.sleep  druby://localhost:39613
      1  833302      12      12 ?             -1 Sl    1001   0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e       uri = ARGV[0]       DRb.start_service("druby://localhost:0")       ro = DRbObject.new_with_uri(uri)       ts = Rinda::TupleSpaceProxy.new(ro)       th = Thread.new do         ts.take([:test_take, nil])       rescue Interrupt         # Expected       end       Kernel.sleep(0.1)       th.raise(Interrupt) # causes loss of the taken tuple       ts.write([:barrier, :continue])       Kernel.sleep  druby://localhost:37257
     12 1562611      12      12 ?             -1 Sl    1001   0:00 ruby ./br.rb build_report trunk-asserts --incremental --process-num=4
1562611 1562614      12      12 ?             -1 S     1001   0:00 sh -c ruby /home/ko1/build-ruby/build-ruby.rb --target_name=trunk-asserts --logfile=/home/ko1/ruby/logs/brlog.trunk-asserts.20231008-023342 --root_dir=/tmp/ruby --timeout=21600 --build_opts='DEFS="-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline"'   --add-env=RUBY_TEST_SUBPROCESS_TIMEOUT_SCALE=50 --incremental --process-num=4
1562614 1562615      12      12 ?             -1 Rl    1001   0:00 ruby /home/ko1/build-ruby/build-ruby.rb --target_name=trunk-asserts --logfile=/home/ko1/ruby/logs/brlog.trunk-asserts.20231008-023342 --root_dir=/tmp/ruby --timeout=21600 --build_opts=DEFS="-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline" --add-env=RUBY_TEST_SUBPROCESS_TIMEOUT_SCALE=50 --incremental --process-num=4
1562615 1566934      12      12 ?             -1 S     1001   0:00 sh -c make yes-test-all TESTOPTS='--stderr-on-failure' TESTS='-j4'
1566934 1566935      12      12 ?             -1 S     1001   0:00 make yes-test-all TESTOPTS=--stderr-on-failure TESTS=-j4
1566935 1567207      12      12 ?             -1 S     1001   1:46 /tmp/ruby/build/trunk-asserts/ruby --disable-gems /tmp/ruby/src/trunk-asserts/test/runner.rb --ruby=./miniruby -I/tmp/ruby/src/trunk-asserts/lib -I. -I.ext/common  /tmp/ruby/src/trunk-asserts/tool/runruby.rb --extout=.ext  -- --disable-gems --excludes-dir=/tmp/ruby/src/trunk-asserts/test/.excludes --name=!/memory_leak/ --stderr-on-failure -j4
1567207 1567211      12      12 ?             -1 Rl    1001 248:35 /tmp/ruby/src/trunk-asserts/tool/lib/test/unit/parallel.rb: TestAst#test_not_cared:test/rubygems/test_gem_installer.rb
1562615 1576261      12      12 ?             -1 R     1001   0:00 ps jx
{11=>[12], 1=>[368019, 548295, 559391, 625485, 833302], 12=>[1562611], 1562611=>[1562614], 1562614=>[1562615], 1562615=>[1566934, 1576261], 1566934=>[1566935], 1566935=>[1567207], 1567207=>[1567211]}
$ timeout 60 gdb -p 1567211 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
>>> Threads
No threads.
>>> Machine level backtrace
>>> Dump Ruby level backtrace (if possible)
$ timeout 60 gdb -p 1567207 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
running file: /tmp/ruby/src/trunk-asserts/test/ruby/test_ast.rb
A test worker crashed. It might be an interpreter bug or
a bug in test/unit/parallel.rb. Try again without the -j
option.
>>> Threads
No threads.
>>> Machine level backtrace
>>> Dump Ruby level backtrace (if possible)
$ timeout 60 gdb -p 1566935 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
make: *** [uncommon.mk:939: yes-test-all] Killed
>>> Threads
No threads.
>>> Machine level backtrace
>>> Dump Ruby level backtrace (if possible)
#<Errno::ESRCH: No such process>
$ timeout 60 gdb -p 1566934 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
>>> Threads
No threads.
>>> Machine level backtrace
>>> Dump Ruby level backtrace (if possible)
$ timeout 60 gdb -p 1576261 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
>>> Threads
No threads.
>>> Machine level backtrace
>>> Dump Ruby level backtrace (if possible)
#<Errno::ESRCH: No such process>

Linux ruby-sp2-docker 5.15.0-72-generic #79-Ubuntu SMP Wed Apr 19 08:22:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Logfile: /home/ko1/ruby/logs/brlog.trunk-asserts.20231008-023342
#<BuildRuby:0x000055638b41d4f0
 @BUILD_DIR="/tmp/ruby/build",
 @INSTALL_DIR="/tmp/ruby/install",
 @REPOSITORY="https://github.com/ruby/ruby.git",
 @REPOSITORY_TYPE=:git,
 @SRC_DIR="/tmp/ruby/src",
 @TARGET_BUILD_DIR="/tmp/ruby/build/trunk-asserts",
 @TARGET_INSTALL_DIR="/tmp/ruby/install/trunk-asserts",
 @TARGET_NAME="trunk-asserts",
 @TARGET_SRC_DIR="/tmp/ruby/src/trunk-asserts",
 @btest_opts="-j4",
 @build_opts="DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"",
 @configure_opts=["--enable-shared"],
 @gist=false,
 @git_branch=nil,
 @git_worktree=nil,
 @incremental=true,
 @logfile="/home/ko1/ruby/logs/brlog.trunk-asserts.20231008-023342",
 @make="make",
 @quiet=false,
 @ruby_env=
  [["RUBY_DEBUG", "ci"], ["RUBY_TEST_SUBPROCESS_TIMEOUT_SCALE", "50"]],
 @steps=
  ["checkout",
   "autoconf",
   "configure",
   "build_up",
   "build_miniruby",
   "build_ruby",
   "build_all",
   "build_install",
   "test_btest",
   "test_basic",
   "test_all",
   "test_rubyspec"],
 @svn_revision=nil,
 @test_opts="TESTS='-j4'",
 @timeout=21600>
                           user     system      total        real
checkout               0.000017   0.000002   0.000019 (  0.000018)
autoconf               0.000026   0.000003   0.000029 (  0.000029)
configure              0.000026   0.000002   0.000028 (  0.000028)
build_up               0.004466   0.004597   2.773028 (  6.577082)
build_miniruby         0.000000   0.002033   1.736693 (  2.259951)
build_ruby             0.000092   0.002053  25.301555 ( 28.004227)
build_all              0.006904   0.008942  90.083068 ( 98.553872)
build_install          0.020320   0.004989  98.120600 (103.896459)
test_btest             0.000319   0.000647 1857.146672 (1110.493214)
test_basic             0.000000   0.010375  19.016429 ( 20.255094)
test_all               0.007058   0.008675 47377.971743 (21601.284751)
/home/ko1/build-ruby/build-ruby.rb:214:in `join': execution expired (Timeout::Error)
	from /home/ko1/build-ruby/build-ruby.rb:214:in `each'
	from /home/ko1/build-ruby/build-ruby.rb:214:in `block (2 levels) in cmd'
	from /usr/lib/ruby/3.0.0/timeout.rb:112:in `timeout'
	from /home/ko1/build-ruby/build-ruby.rb:213:in `block in cmd'
	from /home/ko1/build-ruby/build-ruby.rb:205:in `popen'
	from /home/ko1/build-ruby/build-ruby.rb:205:in `cmd'
	from /home/ko1/build-ruby/build-ruby.rb:381:in `block in test_all'
	from /home/ko1/build-ruby/build-ruby.rb:301:in `block in builddir'
	from /home/ko1/build-ruby/build-ruby.rb:300:in `chdir'
	from /home/ko1/build-ruby/build-ruby.rb:300:in `builddir'
	from /home/ko1/build-ruby/build-ruby.rb:379:in `test_all'
	from /home/ko1/build-ruby/build-ruby.rb:443:in `block (4 levels) in run'
	from /usr/lib/ruby/3.0.0/benchmark.rb:293:in `measure'
	from /usr/lib/ruby/3.0.0/benchmark.rb:375:in `item'
	from /home/ko1/build-ruby/build-ruby.rb:441:in `block (3 levels) in run'
	from /home/ko1/build-ruby/build-ruby.rb:440:in `each'
	from /home/ko1/build-ruby/build-ruby.rb:440:in `block (2 levels) in run'
	from /usr/lib/ruby/3.0.0/benchmark.rb:173:in `benchmark'
	from /usr/lib/ruby/3.0.0/benchmark.rb:205:in `bm'
	from /home/ko1/build-ruby/build-ruby.rb:439:in `block in run'
	from /usr/lib/ruby/3.0.0/benchmark.rb:293:in `measure'
	from /home/ko1/build-ruby/build-ruby.rb:438:in `run'
	from /home/ko1/build-ruby/build-ruby.rb:632:in `<main>'
total: 22971.33 sec

	"make update-unicode DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	"make update-download DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	From https://github.com/ruby/rbs
	* branch 33813a60752624d58dfe5ae770b39bfaf29fbaf1 -> FETCH_HEAD
	HEAD is now at 33813a60 Use valid syntax
	From https://github.com/ruby/debug
	* branch 927587afb6aac69b358b86a01f602d207053e8d2 -> FETCH_HEAD
	HEAD is now at 927587a Stop assuming Integer#times is written in C
	"make update-rubyspec DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	"make update-src DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	"make after-update DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	From https://github.com/ruby/rbs
	* branch 33813a60752624d58dfe5ae770b39bfaf29fbaf1 -> FETCH_HEAD
	HEAD is now at 33813a60 Use valid syntax
	From https://github.com/ruby/debug
	* branch 927587afb6aac69b358b86a01f602d207053e8d2 -> FETCH_HEAD
	HEAD is now at 927587a Stop assuming Integer#times is written in C
	"make miniruby DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	"make ruby DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	"make all DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	"make install DEFS=\"-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline\"" exit with 0.
	From https://github.com/ruby/rbs
	* branch 33813a60752624d58dfe5ae770b39bfaf29fbaf1 -> FETCH_HEAD
	HEAD is now at 33813a60 Use valid syntax
	From https://github.com/ruby/debug
	* branch 927587afb6aac69b358b86a01f602d207053e8d2 -> FETCH_HEAD
	HEAD is now at 927587a Stop assuming Integer#times is written in C
	"make yes-btest TESTOPTS='-q -j4'" exit with 0.

	"make yes-test-basic TESTS='-j4'" exit with 0.
	make yes-test-all TESTOPTS='--stderr-on-failure' TESTS='-j4'
	$$$ #<Timeout::Error: execution expired>
	### enter analyzing mode for stuck processes
	$$$ 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-asserts --incremental --process-num=4
	1 368019 12 12 ? -1 S 1001 0:02 /tmp/ruby/build/trunk-asserts/ruby -e Signal.trap(:INT, "DEFAULT"); pipe=IO.pipe; Thread.start {Thread.pass until Thread.main.stop?; puts; STDOUT.flush}; pipe[0].read
	1 548295 12 12 ? -1 Sl 1001 0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e uri = ARGV[0] DRb.start_service("druby://localhost:0") ro = DRbObject.new_with_uri(uri) ts = Rinda::TupleSpaceProxy.new(ro) th = Thread.new do ts.take([:test_take, nil]) rescue Interrupt # Expected end Kernel.sleep(0.1) th.raise(Interrupt) # causes loss of the taken tuple ts.write([:barrier, :continue]) Kernel.sleep druby://localhost:46415
	1 559391 12 12 ? -1 Sl 1001 0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e uri = ARGV[0] DRb.start_service("druby://localhost:0") ro = DRbObject.new_with_uri(uri) ts = Rinda::TupleSpaceProxy.new(ro) th = Thread.new do ts.take([:test_take, nil]) rescue Interrupt # Expected end Kernel.sleep(0.1) th.raise(Interrupt) # causes loss of the taken tuple ts.write([:barrier, :continue]) Kernel.sleep druby://localhost:38831
	1 625485 12 12 ? -1 Sl 1001 0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e uri = ARGV[0] DRb.start_service("druby://localhost:0") ro = DRbObject.new_with_uri(uri) ts = Rinda::TupleSpaceProxy.new(ro) th = Thread.new do ts.take([:test_take, nil]) rescue Interrupt # Expected end Kernel.sleep(0.1) th.raise(Interrupt) # causes loss of the taken tuple ts.write([:barrier, :continue]) Kernel.sleep druby://localhost:39613
	1 833302 12 12 ? -1 Sl 1001 0:03 /tmp/ruby/build/trunk-asserts/ruby -rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e uri = ARGV[0] DRb.start_service("druby://localhost:0") ro = DRbObject.new_with_uri(uri) ts = Rinda::TupleSpaceProxy.new(ro) th = Thread.new do ts.take([:test_take, nil]) rescue Interrupt # Expected end Kernel.sleep(0.1) th.raise(Interrupt) # causes loss of the taken tuple ts.write([:barrier, :continue]) Kernel.sleep druby://localhost:37257
	12 1562611 12 12 ? -1 Sl 1001 0:00 ruby ./br.rb build_report trunk-asserts --incremental --process-num=4
	1562611 1562614 12 12 ? -1 S 1001 0:00 sh -c ruby /home/ko1/build-ruby/build-ruby.rb --target_name=trunk-asserts --logfile=/home/ko1/ruby/logs/brlog.trunk-asserts.20231008-023342 --root_dir=/tmp/ruby --timeout=21600 --build_opts='DEFS="-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline"' --add-env=RUBY_TEST_SUBPROCESS_TIMEOUT_SCALE=50 --incremental --process-num=4
	1562614 1562615 12 12 ? -1 Rl 1001 0:00 ruby /home/ko1/build-ruby/build-ruby.rb --target_name=trunk-asserts --logfile=/home/ko1/ruby/logs/brlog.trunk-asserts.20231008-023342 --root_dir=/tmp/ruby --timeout=21600 --build_opts=DEFS="-DRGENGC_CHECK_MODE=2 -DRUBY_DEBUG=1 -fno-inline" --add-env=RUBY_TEST_SUBPROCESS_TIMEOUT_SCALE=50 --incremental --process-num=4
	1562615 1566934 12 12 ? -1 S 1001 0:00 sh -c make yes-test-all TESTOPTS='--stderr-on-failure' TESTS='-j4'
	1566934 1566935 12 12 ? -1 S 1001 0:00 make yes-test-all TESTOPTS=--stderr-on-failure TESTS=-j4
	1566935 1567207 12 12 ? -1 S 1001 1:46 /tmp/ruby/build/trunk-asserts/ruby --disable-gems /tmp/ruby/src/trunk-asserts/test/runner.rb --ruby=./miniruby -I/tmp/ruby/src/trunk-asserts/lib -I. -I.ext/common /tmp/ruby/src/trunk-asserts/tool/runruby.rb --extout=.ext -- --disable-gems --excludes-dir=/tmp/ruby/src/trunk-asserts/test/.excludes --name=!/memory_leak/ --stderr-on-failure -j4
	1567207 1567211 12 12 ? -1 Rl 1001 248:35 /tmp/ruby/src/trunk-asserts/tool/lib/test/unit/parallel.rb: TestAst#test_not_cared:test/rubygems/test_gem_installer.rb
	1562615 1576261 12 12 ? -1 R 1001 0:00 ps jx
	{11=>[12], 1=>[368019, 548295, 559391, 625485, 833302], 12=>[1562611], 1562611=>[1562614], 1562614=>[1562615], 1562615=>[1566934, 1576261], 1566934=>[1566935], 1566935=>[1567207], 1567207=>[1567211]}
	$ timeout 60 gdb -p 1567211 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
	>>> Threads
	No threads.
	>>> Machine level backtrace
	>>> Dump Ruby level backtrace (if possible)
	$ timeout 60 gdb -p 1567207 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
	running file: /tmp/ruby/src/trunk-asserts/test/ruby/test_ast.rb
	A test worker crashed. It might be an interpreter bug or
	a bug in test/unit/parallel.rb. Try again without the -j
	option.
	>>> Threads
	No threads.
	>>> Machine level backtrace
	>>> Dump Ruby level backtrace (if possible)
	$ timeout 60 gdb -p 1566935 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
	make: *** [uncommon.mk:939: yes-test-all] Killed
	>>> Threads
	No threads.
	>>> Machine level backtrace
	>>> Dump Ruby level backtrace (if possible)
	#<Errno::ESRCH: No such process>
	$ timeout 60 gdb -p 1566934 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
	>>> Threads
	No threads.
	>>> Machine level backtrace
	>>> Dump Ruby level backtrace (if possible)
	$ timeout 60 gdb -p 1576261 -x /home/ko1/build-ruby/gdbscript -batch -quiet 2> /dev/null
	>>> Threads
	No threads.
	>>> Machine level backtrace
	>>> Dump Ruby level backtrace (if possible)
	#<Errno::ESRCH: No such process>