Recent failure results

OK: 0, NG: 2, 2021-05-20 00:06:23 +0900 ~ 2021-05-23 00:06:23 +0900

trunk-test@ruby-sky1	2021-05-22 14:17:22 +0900	NG (8b00bfb7c2)		[LOG]
trunk@ruby-iga	2021-05-21 11:35:24 +0900	NG (9edad0df74)		[LOG]