Encountered the same issue on Fedora 20, with backups made using a French local (fr_FR.utf-8 probably). I confirm the downgrade fixed the issue for me.
Problematic versions: deja-dup-30.0-1.fc20.x86_64 duplicity-0.6.24-2.fc20
downgraded to : duplicity-0.6.21-1.fc20.x86_64 deja-dup-27.3.1-2.fc20.x86_64
Encountered the same issue on Fedora 20, with backups made using a French local (fr_FR.utf-8 probably). I confirm the downgrade fixed the issue for me.
Problematic versions: 30.0-1. fc20.x86_ 64 0.6.24- 2.fc20
deja-dup-
duplicity-
downgraded to : 0.6.21- 1.fc20. x86_64 27.3.1- 2.fc20. x86_64
duplicity-
deja-dup-