Ruby

[prototype runtime] Find redefined methods #6993

Job	Run time
C99_compile (3.4)	49s
test (3.1, test)	2m 58s
C99_compile (head)	1m 37s
test (3.2, test)	2m 51s
test (3.3, test)	3m 7s
valgrind	51m 41s
test (3.4, test)	2m 58s
test (head, test)	3m 23s
test (head, stdlib_test rubocop)	3m 14s
test (3.4, stdlib_test)	2m 21s
test (3.4, test, --enable-frozen-string-literal)	3m 8s
test (3.4, stdlib_test, --enable-frozen-string-literal)	2m 15s
test (3.4, rubocop validate test_doc build test_generate_stdlib raap)	2m 50s
test (3.4, typecheck_test)	1m 14s
	1h 24m 26s

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