backup fail if cannot read some file because of permissions

[Fabiano Taioli AtVista]

Recently Dejadup backup fail every day reporting below error.

The backup works if I fix some file permissions.

I think the backup must succeed event if cannot read all files, at least it must report a warning
about unreadable files.

Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1548, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1534, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1383, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1515, in do_backup
    check_last_manifest(col_stats) # not needed for full backup
  File "/usr/bin/duplicity", line 1217, in check_last_manifest
    last_backup_set.check_manifests()
  File "/usr/lib/python2.7/site-packages/duplicity/collections.py", line 208, in check_manifests
    remote_manifest = self.get_remote_manifest()
  File "/usr/lib/python2.7/site-packages/duplicity/collections.py", line 247, in get_remote_manifest
    return manifest.Manifest().from_string(manifest_buffer)
  File "/usr/lib/python2.7/site-packages/duplicity/manifest.py", line 207, in from_string
    self.files_changed = list(map(parse_fileinfo, match.group(3).split('\n')))
  File "/usr/lib/python2.7/site-packages/duplicity/manifest.py", line 204, in parse_fileinfo
    fileinfo = line.strip().split()
MemoryError

Distribuition: Arch linux
deja-dup 36.3
duplicity 0.7.14

Settings:

org.gnome.DejaDup last-restore ''
org.gnome.DejaDup periodic true
org.gnome.DejaDup periodic-period 1
org.gnome.DejaDup full-backup-period 90
org.gnome.DejaDup backend 'local'
org.gnome.DejaDup last-run '2017-11-02T11:27:46.920554Z'
org.gnome.DejaDup nag-check '2017-11-02T11:40:48.921435Z'
org.gnome.DejaDup prompt-check '2016-10-26T11:12:47.019511Z'
org.gnome.DejaDup root-prompt true
org.gnome.DejaDup include-list ['$HOME']
org.gnome.DejaDup exclude-list ['$TRASH', '$DOWNLOAD']
org.gnome.DejaDup last-backup '2017-11-02T11:27:46.920554Z'
org.gnome.DejaDup allow-metered false
org.gnome.DejaDup delete-after 0
org.gnome.DejaDup.Rackspace username ''
org.gnome.DejaDup.Rackspace container 'i.vista.it'
org.gnome.DejaDup.S3 id ''
org.gnome.DejaDup.S3 bucket ''
org.gnome.DejaDup.S3 folder 'i.vista.it'
org.gnome.DejaDup.OpenStack authurl ''
org.gnome.DejaDup.OpenStack tenant ''
org.gnome.DejaDup.OpenStack username ''
org.gnome.DejaDup.OpenStack container 'i.vista.it'
org.gnome.DejaDup.GCS id ''
org.gnome.DejaDup.GCS bucket ''
org.gnome.DejaDup.GCS folder 'i.vista.it'
org.gnome.DejaDup.Local folder '/mnt/backup'
org.gnome.DejaDup.Remote uri ''
org.gnome.DejaDup.Remote folder 'fbn.vista.it'
org.gnome.DejaDup.Drive uuid ''
org.gnome.DejaDup.Drive icon ''
org.gnome.DejaDup.Drive folder '$HOSTNAME'
org.gnome.DejaDup.Drive name ''
org.gnome.DejaDup.GOA id ''
org.gnome.DejaDup.GOA folder 'fbn.vista.it'
org.gnome.DejaDup.GOA type ''
org.gnome.DejaDup.File short-name ''
org.gnome.DejaDup.File type 'normal'
org.gnome.DejaDup.File migrated true
org.gnome.DejaDup.File name ''
org.gnome.DejaDup.File path 'file:///mnt/backup'
org.gnome.DejaDup.File uuid ''
org.gnome.DejaDup.File icon ''
org.gnome.DejaDup.File relpath @ay []