i have a system which often reboots/crashes (due to power loss) and 3 of 5 backups weren't working yesterday, and the logs show:

Failed to create/acquire the lock /backup/nixcloud-backup/.borg-cache/e4f72857fd062fadead393dd604d052d018ba6e3f115fb23f3bf7dcd8ee53ed8/lock.exclusive (timeout).
borg error, exiting

can removal of these files be automated? one could write the PID into the lockfile somewhere and check if the process is still around.