Missing a main thread watchdog is a CRITICAL log
Missing a main thread watchdog is a CRITICAL log

If this happens, either the main thread has died from e.g. a segfault,
or it is stuck in an infinite loop. Either way, this is one of the few
situations that call for a CRITICAL log, rather than just an ERROR.

AgalmicVentures/Werk,AgalmicVentures/Werk