block_retrieval_queue: Only cancel the retrieval context after a request has been finalized.
block_retrieval_queue: Only cancel the retrieval context after a request has been finalized.

keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client