coredumper worked like a charm. Useful tool, that is... although as a
bit of advice, I'd try not to run it on Postgres if your various
memory settings are tweaked towards production use -- the core dump
that was captured on my server weighed in at 16 GB.
Anyways, I've attached both the log entries that caused the error as
well as a backtrace using `bt full`.
Cheers, hope it helps.