[erlang-questions] How to catch a killer?

[Evan Miller]

I have gen_server that is being killed predictably but mysteriously
(its supervisor receives a "killed" message). Are there any debugging
tools available for figuring out who is sending the exit(kill)
message? Tracing the process reveals nothing.

The bug is probably something dumb in my code, but I'm surprised that
a process can assassinate another process and leave behind no
evidence. How can I catch the killer?