test

Merge pull request #66 from ruby/fix-ci #170

Job	Run time
ruby-versions / Generate Ruby versions	2s
build (2.5 / ubuntu-latest)	20s
build (2.5 / windows-latest)	3m 24s
build (2.6 / ubuntu-latest)	20s
build (2.6 / macos-latest)	34s
build (2.6 / windows-latest)	3m 9s
build (2.7 / ubuntu-latest)	20s
build (2.7 / macos-latest)	28s
build (2.7 / windows-latest)	3m 18s
build (3.0 / ubuntu-latest)	14s
build (3.0 / macos-latest)	10s
build (3.0 / windows-latest)	1m 39s
build (3.1 / ubuntu-latest)	15s
build (3.1 / macos-latest)	11s
build (3.1 / windows-latest)	1m 46s
build (3.2 / ubuntu-latest)	8s
build (3.2 / macos-latest)	10s
build (3.2 / windows-latest)	1m 13s
build (3.3 / ubuntu-latest)	6s
build (3.3 / macos-latest)	10s
build (3.3 / windows-latest)	2m 38s
build (head / ubuntu-latest)	10s
build (head / macos-latest)	11s
build (head / windows-latest)	50s
build (mswin / windows-latest)	1m 31s
	23m 17s

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