Mega backend upload error

[Ivan Phrolov]

duplicity version: 0.7.14
python version: 2.7.13

megaput: duplicity-full.20170910T012131Z.vol1.difftar.gz
Backtrace of previous error: Traceback (innermost last):
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backend.py", line 369, in inner_retry
    return fn(self, *args)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backend.py", line 522, in put
    self.__do_put(source_path, remote_filename)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backend.py", line 508, in __do_put
    self.backend._put(source_path, remote_filename)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backends/megabackend.py", line 101, in _put
    self.upload(local_file=source_path.get_canonical(), remote_file=remote_filename)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backends/megabackend.py", line 164, in upload
    self.subprocess_popen(cmd)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backend.py", line 479, in subprocess_popen
    private = self.munge_password(commandline)
  File "/usr/local/lib/python2.7/dist-packages/duplicity/backend.py", line 449, in munge_password
    return re.sub(r'(:([^\s:/@]+)@([^\s@]+))', r':*****@\3', commandline)
  File "/usr/lib/python2.7/re.py", line 155, in sub
    return _compile(pattern, flags).sub(repl, string, count)
 TypeError: expected string or buffer

Attempt 1 failed. TypeError: expected string or buffer