test

Show mkmf.log when failed #1329

Job	Run time
ruby-versions / Generate Ruby versions	3s
test (2.6, ubuntu-latest)	29s
test (2.6, macos-latest)	32s
test (2.6, windows-latest)	2m 59s
test (2.7, ubuntu-latest)	30s
test (2.7, macos-latest)	39s
test (2.7, windows-latest)	2m 44s
test (3.0, ubuntu-latest)	15s
test (3.0, macos-latest)	18s
test (3.0, windows-latest)	1m 1s
test (3.1, ubuntu-latest)	18s
test (3.1, macos-latest)	30s
test (3.1, windows-latest)	55s
test (3.2, ubuntu-latest)	15s
test (3.2, macos-latest)	19s
test (3.2, windows-latest)	1m 25s
test (3.3, ubuntu-latest)	29s
test (3.3, macos-latest)	27s
test (3.3, windows-latest)	2m 41s
test (head, ubuntu-latest)	13s
test (head, macos-latest)	18s
test (head, windows-latest)	58s
test (jruby)	56s
test (jruby-head)	1m 6s
test (truffleruby)	19s
test (truffleruby-head)	21s
	21m 0s

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