Comment 2 for bug 1299455

 Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it again. When you test it and it is still an issue, kindly upload the updated logs by running only once:
apport-collect 1299455

and the file /tmp/deja-dup.log after executing

DEJA_DUP_DEBUG=1 deja-dup --backup | tail -n 1000 > /tmp/deja-dup.log

You may want to scrub the log of any incriminating file names or details.