> On closer look your patch is also ignoring SystemExit. I think it's beneficial to honor SystemExit, so a user could use this as a means to replace the current process with a new one.

Yes, SystemExit should cancel all the tasks that are currently in the queue. I guess my patch doesn't handle this properly.

> If we keep that behavior, the real problem here is that the result handler hangs if the process that reserved a job is gone, which is going to be handled by #9205. Should we mark it as a duplicate?

Yes, I think that #9205 covers this issue, so #8296 may be marked as a duplicate.