Recent failure results

OK: 0, NG: 2, 2021-05-03 02:01:23 +0900 ~ 2021-05-06 02:01:23 +0900

trunk@ruby-iga	2021-05-04 07:43:38 +0900	NG (9a6226c61e)		[LOG]
trunk-test@ruby-sky1	2021-05-03 02:39:28 +0900	NG (121fa24a34)		[LOG]