This was intentionally "kicked down the road" as an example of unhandled exceptions generally not being handled so well. See https://secure.phabricator.com/D11789#114084

A spot fix would need to catch two types of exceptions - ConduitClientException and ConduitException - which have different data.

A general fix would probably need to have this sort of awareness too, and / or we'd need some more general Exception infrastructure so specific exceptions wouldn't need to be surfaced all the way down the stack.