Hello Mack Stanley, I am not involved in packaging a2ps, but I guess there are some more information needed to even start investigating.
I tried several files in a VM to send to a2ps and I could not observe a crash. Therefore could you supply to this bug which command line is used to trigger the crash? If possible a link to or if small enough attaching the input you give to a2ps? A crash should at least have a trace in dmesg output, could you add this? And possibly you could install the package "systemd-cordump". That way some more information should be written to the journal - e.g. visible in 'journalctl -e'. Kind regards, Bernhard