Merge pull request #280 from cybozu-go/push-nsrprwlxuwvl #1317

Job	Run time
build (1.35.4, 3Mi, change-to-standalone)	23m 33s
build (1.35.4, 3Mi, change-to-primary)	30m 10s
build (1.35.4, 3Mi, change-to-secondary)	28m 3s
build (1.35.4, 3Mi, backup-failure)	36m 44s
build (1.35.4, 3Mi, incr-backup)	40m 17s
build (1.35.4, 3Mi, !//)	47m 50s
build (1.35.4, 10Mi, various-transfer-part-size)	24m 26s
build (1.35.4, 200Gi, various-transfer-part-size)	23m 30s
build (1.35.4, 3Mi, full-backup)	36m 19s
build (1.35.4, 3Mi, lock)	24m 6s
build (1.34.4, 3Mi, full-backup)	34m 31s
	5h 49m 29s

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