test

Merge pull request #255 from nobu/build-java #43

Job	Run time
ruby-versions / Generate Ruby versions	3s
test (2.5, ubuntu-latest)	25s
test (2.5, macos-latest)	1m 1s
test (2.5, windows-latest)	3m 11s
test (2.6, ubuntu-latest)	35s
test (2.6, macos-latest)	1m 33s
test (2.6, windows-latest)	3m 12s
test (2.7, ubuntu-latest)	33s
test (2.7, macos-latest)	1m 26s
test (2.7, windows-latest)	2m 32s
test (3.0, ubuntu-latest)	16s
test (3.0, macos-latest)	52s
test (3.0, windows-latest)	1m 54s
test (3.1, ubuntu-latest)	21s
test (3.1, macos-latest)	26s
test (3.1, windows-latest)	1m 55s
test (3.2, ubuntu-latest)	30s
test (3.2, macos-latest)	38s
test (3.2, windows-latest)	3m 9s
test (head, ubuntu-latest)	36s
test (head, macos-latest)	39s
test (head, windows-latest)	2m 3s
test (jruby, ubuntu-latest)	5m 38s
test (jruby-head, ubuntu-latest)	6m 35s
test (truffleruby, ubuntu-latest)	3m 2s
test (truffleruby-head, ubuntu-latest)	3m 7s
	46m 12s

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