Summary: Timeout exceptions while connection to new clients where rethrown but catched nowhere. Probably this warning should be handled more gracefully, but this at least moves it to warn rather than spawning our monitoring on transient issues
Reviewed By: passy, antonk52
Differential Revision: D47665050
fbshipit-source-id: ad51808d12e9f4de318d4426933ecb3787839b7c