Comment 11 for bug 1729695

Ubuntu 17.10 (duplicity 0.7.12)

Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1546, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1540, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1391, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1510, in do_backup
    full_backup(col_stats)
  File "/usr/bin/duplicity", line 575, in full_backup
    globals.backend)
  File "/usr/bin/duplicity", line 434, in write_multivol
    at_end = gpg.GzipWriteFile(tarblock_iter, tdp.name, globals.volsize)
  File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 421, in GzipWriteFile
    new_block = block_iter.next()
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line 520, in next
    result = self.process_continued()
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line 700, in process_continued
    data, last_block = self.get_data_block(self.process_fp)
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line 686, in get_data_block
    if fp.close():
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line 440, in close
    self.callback(self.sig_gen.getsig(), *self.extra_args)
  File "/usr/lib/python2.7/dist-packages/duplicity/librsync.py", line 218, in getsig
    return ''.join(self.sigstring_list)
MemoryError