Your process receives and :EXIT message from another process that is linked to the former.
Do you start a process from your job process with a SomeModule.start_link or spawn_link call? The process with pid <0.13246.0> was killed and as it was linked to your own process, your process exited with that same reason.
You may create a test and directly call your Job.perform function repeatedly, without starting oban. This will be easier to get a proper stacktrace.
