# Pastebin 7lEAWyKG
# Good Run
thread 1: register event 1
thread 1: wait for event 1
thread 1: sleep
thread 2: wake up
thread 2: trigger event 1
thread 2: register event 2
thread 2: wait for event 2
thread 2: sleep
# Bad Run
thread 1: wake up
thread 1: un-register event 1 (trigger causes an un-register)
thread 1: trigger event 2
thread 2: wake up
thread 2: trigger event 1
thread 2: ERROR! event 1 is not registered (was un-registered in the last trigger, and has not yet been re-registered)