Travis CI test #118

Job	Run time
ruby-versions / Generate Ruby versions	3s
build (2.7 / ubuntu-latest)	35s
build (2.7 / macos-latest)	55s
build (2.7 / windows-latest)	2m 12s
build (3.0 / ubuntu-latest)	17s
build (3.0 / macos-latest)	31s
build (3.0 / windows-latest)	1m 15s
build (3.1 / ubuntu-latest)	15s
build (3.1 / macos-latest)	36s
build (3.1 / windows-latest)	1m 50s
build (3.2 / ubuntu-latest)	19s
build (3.2 / macos-latest)	29s
build (3.2 / windows-latest)	2m 42s
build (head / ubuntu-latest)	16s
build (head / macos-latest)	20s
build (truffleruby-head / ubuntu-latest)	38s
build (truffleruby-head / macos-latest)	1m 1s
build (mswin / windows-latest)	1m 14s
build (mingw / windows-latest)	1m 9s
	16m 37s

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