test

silence ruby head logger warnings #591

Job	Run time
build (3.1, windows-latest, spec)	5m 16s
build (3.2, ubuntu-latest, spec)	3m 10s
build (head, ubuntu-latest, spec)	2m 31s
build (3.2, windows-latest, spec)	15m 39s
build (head, windows-latest, spec)	1m 41s
build (3.1, ubuntu-latest, spec)	1m 21s
build (jruby-head, ubuntu-latest, spec)	13m 0s
build (3.1, ubuntu-latest, rubocop)	13s
build (3.3, windows-latest, spec)	14m 42s
build (3.4, ubuntu-latest, spec)	2m 54s
build (3.3, ubuntu-latest, spec)	3m 4s
build (jruby-head, windows-latest, spec)	1m 49s
build (3.4, windows-latest, spec)	7m 10s
	1h 12m 30s

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