It's because you're using the fish shell instead of the more common bash shell. If I understand correctly, the fish translation of Vej's command is:
env DEJA_DUP_DEBUG=1 deja-dup --backup | tail -n 1000 > /tmp/deja- dup.log or: set -x DEJA_DUP_DEBUG 1 deja-dup --backup | tail -n 1000 > /tmp/deja-dup.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1652410 Title: duja-dup AssertionError: ({1: 'duplicity- full.20161129T015237Z.vol1.difftar'} To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/deja-dup/+bug/1652410/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs