Log more details when buck fails to start
Log more details when buck fails to start

Summary: Currently when buckd fails to start, we don't really log any extra details. This is an edge case, but we should be able to get more information when this happens.

Reviewed By: swgillespie

shipit-source-id: 08ee1f37bec4ebded06c43d0ced38afd8ff5ed94

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