Comment 4 for bug 922101

Have the same bug on duplicity 0.7.06-2ubuntu2.

Cleanup of temporary directory /tmp/duplicity-z55rH2-tempdir failed - this is probably a bug.
Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1532, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1526, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1380, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1501, in do_backup
    full_backup(col_stats)
  File "/usr/bin/duplicity", line 567, in full_backup
    globals.backend)
  File "/usr/bin/duplicity", line 425, in write_multivol
    at_end = gpg.GPGWriteFile(tarblock_iter, tdp.name, globals.gpg_profile, globals.volsize)
  File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 336, in GPGWriteFile
    bytes_to_go = data_size - get_current_size()
  File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 328, in get_current_size
    return os.stat(filename).st_size
OSError: [Errno 2] No such file or directory: '/tmp/duplicity-z55rH2-tempdir/mktemp-BA1WCM-80'

It appears on every single run, meaning duplicity will never finish a single backup.
I also agree that this is unrelated to gpg not being found as suggested in #710198 and #532244. I have both gpg and gpg2 installed on the system.

$ gpg --version
gpg (GnuPG) 1.4.20

$ gpg2 --version
gpg (GnuPG) 2.1.11
libgcrypt 1.6.5

Ubuntu 16.04.01