Comment 46 for bug 1855736

Getting similar issue after upgrading to Ubuntu 20.10:

Traceback (innermost last):
  File "/usr/bin/duplicity", line 106, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 92, in with_tempdir
    fn()
  File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line 1538, in main
    do_backup(action)
  File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line 1674, in do_backup
    incremental_backup(sig_chain)
  File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line 655, in incremental_backup
    bytes_written = dummy_backup(tarblock_iter)
  File "/usr/lib/python3/dist-packages/duplicity/dup_main.py", line 224, in dummy_backup
    while next(tarblock_iter):
  File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line 544, in __next__
    result = self.process(next(self.input_iter)) # pylint: disable=assignment-from-no-return
  File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line 209, in get_delta_iter
    for new_path, sig_path in collated:
  File "/usr/lib/python3/dist-packages/duplicity/diffdir.py", line 296, in collate2iters
    relem1 = next(riter1)
  File "/usr/lib/python3/dist-packages/duplicity/selection.py", line 97, in __next__
    return next(self.iter)
  File "/usr/lib/python3/dist-packages/duplicity/selection.py", line 181, in Iterate
    subpath, val = next(diryield_stack[-1])
  File "/usr/lib/python3/dist-packages/duplicity/selection.py", line 148, in diryield
    s = self.Select(new_path)
  File "/usr/lib/python3/dist-packages/duplicity/selection.py", line 210, in Select
    result = sf(path)
  File "/usr/lib/python3/dist-packages/duplicity/selection.py", line 458, in exclude_sel_func
    elif path.append(filename).exists():
  File "/usr/lib/python3/dist-packages/duplicity/path.py", line 566, in append
    return self.__class__(self.base, self.index + (ext,))
  File "/usr/lib/python3/dist-packages/duplicity/path.py", line 539, in __init__
    self.setdata()
  File "/usr/lib/python3/dist-packages/duplicity/path.py", line 549, in setdata
    self.stat = os.lstat(self.name)
 PermissionError: [Errno 13] Permission denied: b'/home/nikodll/.hardinfo/.deja-dup-ignore'

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$ python3 /usr/bin/duplicity --version
> duplicity 0.8.12