Ruby

Merge pull request #2591 from ruby/no-exit #7134

Job	Run time
C99_compile (head)	1m 16s
C99_compile (3.4)	52s
test (3.1, test)	2m 59s
test (head, test)	3m 40s
test (3.3, test)	3m 33s
test (head, stdlib_test rubocop)	3m 5s
test (3.4, stdlib_test, --enable-frozen-string-literal)	2m 25s
test (3.4, test, --enable-frozen-string-literal)	3m 32s
test (3.4, test)	3m 22s
test (3.2, test)	2m 54s
test (3.4, rubocop validate test_doc build test_generate_stdlib raap)	2m 57s
test (3.4, stdlib_test)	2m 19s
test (3.4, typecheck_test)	1m 26s
	34m 20s

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