akka/akka — pull request #1332 by drewhk (2013-04-12 13:58:01+00:00)
Title: SupervisorSpec implicitly relied on a loss of a message

If the "testchild" message is still in the parent's mailbox while the parent is restarted, it will be delivered for the parent's brand new child after restart who will reply.

I think the race came out because Failed is now a system message and the timing has changed.