… happen synchronously on setup
For some reason, a write to the queue's pipe was failing which then called rb_raise() which totally ripped apart the fabric of the universe. Since failing to write to the pipe is a very rare situation and is *probably* happening during shutdown (*probably*...we *hope*), we output a message if ZKRBDebugging is true. Otherwise, ignore the error. Also add a warning message about doing that again (it was bad, mm'kay).