more specs #43

Job	Run time
test (ubuntu-latest, 2.5)	23s
test (ubuntu-latest, 2.6)	26s
test (ubuntu-latest, 2.7)	27s
test (ubuntu-latest, 3.0)	14s
test (ubuntu-latest, 3.1)	12s
test (ubuntu-latest, 3.2)	11s
test (ubuntu-latest, head)	9s
test (ubuntu-latest, debug)	28s
test (ubuntu-latest, truffleruby)	35s
test (ubuntu-latest, truffleruby-head)	44s
test (ubuntu-latest, jruby)	44s
test (ubuntu-latest, jruby-head)	42s
test (macos-latest, 2.5)	50s
test (macos-latest, 2.6)	55s
test (macos-latest, 2.7)	54s
test (macos-latest, 3.0)	16s
test (macos-latest, 3.1)	20s
test (macos-latest, 3.2)	23s
test (macos-latest, head)	17s
test (macos-latest, debug)	42s
test (macos-latest, truffleruby)	52s
test (macos-latest, truffleruby-head)	1m 32s
test (macos-latest, jruby)	1m 8s
test (macos-latest, jruby-head)	1m 5s
coveralls	5s
	14m 34s

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