Checks if for jobs in state RUNNING there's a lock as well. If this is not the case,
the job is considered to be crashed (because a job must regularly update the corresponding
lock).
Starts dead job detection. The start status is returned as soon as we know if we have
the lock or not (actual job detection is running in the background after that).
Checks if for jobs in state RUNNING there's a lock as well. If this is not the case, the job is considered to be crashed (because a job must regularly update the corresponding lock).