040000 tree bf024221c44cffaf634753cce851abaf6a47c62d	compiler
040000 tree b4d934b4132a7dd6ca1e5c53dcb68e1cf999b6e3	murmurhash
040000 tree 4fb2ea28f4d55e7d89dd3257123ecd53f62ff294	systeminfo
040000 tree ef10796acfb025d8963a96951f5bf1b6ab129eff	trace_event