`struct rb_thread_sched_waiting` #878

Job	Run time
make (check, cppflags=-DVM_CHECK_MODE)	8m 20s
make (check, i686)	11m 44s
make (check, --disable-yjit)	6m 57s
make (check, --enable-shared --enable-load-relative)	7m 54s
make (check, --with-shared-gc)	7m 10s
make (test-bundler-parallel)	28m 57s
make (test-bundled-gems)	17m 49s
make (check, ubuntu-20.04)	9m 21s
Ubuntu result	1s
	1h 38m 13s

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