Merge pull request #240 from nobu/old-checks #3

Job	Run time
ruby-versions / Generate Ruby versions	3s
test (2.5, ubuntu-latest)	33s
test (2.5, macos-latest)	56s
test (2.5, windows-latest)	2m 43s
test (2.6, ubuntu-latest)	34s
test (2.6, macos-latest)	1m 10s
test (2.6, windows-latest)	3m 17s
test (2.7, ubuntu-latest)	33s
test (2.7, macos-latest)	1m 23s
test (2.7, windows-latest)	2m 8s
test (3.0, ubuntu-latest)	17s
test (3.0, macos-latest)	25s
test (3.0, windows-latest)	1m 46s
test (3.1, ubuntu-latest)	24s
test (3.1, macos-latest)	26s
test (3.1, windows-latest)	1m 56s
test (3.2, ubuntu-latest)	24s
test (3.2, macos-latest)	33s
test (3.2, windows-latest)	4m 16s
test (head, ubuntu-latest)	29s
test (head, macos-latest)	1m 2s
test (head, windows-latest)	1m 49s
test (jruby, ubuntu-latest)	5m 43s
test (jruby-head, ubuntu-latest)	6m 51s
test (truffleruby, ubuntu-latest)	2m 50s
test (truffleruby-head, ubuntu-latest)	3m 27s
	45m 58s

Provide feedback