bn leaves rdiff-backup dir in unclean state after failure
If the rdiff-backup thread of a backupninja process dies, the rdiff-backup directory is left unclean.
It would be nice if "rdiff-backup --check-destination-dir" is run at the start of a new backup for that directory, if the directory needs it.
(from redmine: created on 2015-08-27, closed on 2015-08-31)