Everything has gone smoothly setting up this container to backup my Ubuntu system. I've created an exclude file to avoid wasting time with files and directories that I don't need backed up. The problem appeared when processing /var (specifically /var/lib/docker/aufs). restic is reporting that it needs to analyze up 128 TiB of data!!!!!!!

The actual data:
> du -hs /var/lib/docker/aufs
19G /var/lib/docker/aufs
> find /var/lib/docker/aufs | wc -l
696063
> du -hs /volume1/backups/restic-repo
37G /volume1/backups/restic-repo
Needless to say my backup for this one subdirectory (which is already in my EXCLUDE list) has effectively made my backup almost 9000x slower (19 GB vs 128 TiB) than it should be!!!!
Help!