Recent failure results

OK: 0, NG: 2, 2021-04-29 00:06:23 +0900 ~ 2021-05-02 00:06:23 +0900

trunk-test@ruby-sky1	2021-05-01 07:14:14 +0900	NG (1f255adda9)		[LOG]
trunk-random2@phosphorus-docker	2021-04-29 07:54:45 +0900	NG (b0b5a4e86e)		[LOG]