Hello! The attached patch should allow shepherd (PID 1) to dump core when it crashes (systemd does something similar). Jesse (and anyone else experiencing this!), could you try to (1) reconfigure with this patch, (2) reboot, (3) try to halt the system to reproduce the crash, and (4) retrieve a backtrace from the ‘core’ file? For #4, you’ll have to do something along these lines once you’ve rebooted after the crash: sudo gdb /run/current-system/profile/bin/guile /core and then type “thread apply all bt” at the GDB prompt. I’ll also try to do that on another machine where I’ve seen it happen. Thanks in advance! Ludo’.