040000 tree a9e8f79f1fd519beb67e1b4fb0ab429964ee5647	base
040000 tree db48ddaee268b9dbb85b3f547f62def897591c1d	custom_output
040000 tree 3cde87031f341ff8b61dbe427fc8595b17ce7858	error_hook
040000 tree a0483e4c0266fc21aa8cade41c57ddc42161f3bb	mock