Public bug reported:

The backup application (GUI) failed a couple of hours into its first
attempt to write to an external disk after I upgraded to 17.10. The
failure is "Backup Failed: Failed with an unknown error" and the
following details. Note that the machine has 20GB of RAM, and there is
no sign of swap having been used.

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 1416, in do_backup
    globals.archive_dir).set_values()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 710, 
in set_values
    self.get_backup_chains(partials + backend_filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 836, 
in get_backup_chains
    add_to_sets(f)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 824, 
in add_to_sets
    if set.add_filename(filename):
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 101, 
in add_filename
    self.set_manifest(filename)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 148, 
in set_manifest
    self.set_files_changed()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 128, 
in set_files_changed
    mf = self.get_manifest()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 250, 
in get_manifest
    return self.get_local_manifest()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 224, 
in get_local_manifest
    return manifest.Manifest().from_string(manifest_buffer)
  File "/usr/lib/python2.7/dist-packages/duplicity/manifest.py", line 214, in 
from_string
    for match in vi_iterator:
MemoryError

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: duplicity 0.7.12-1ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.4
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 20 08:12:07 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-11-18 (2 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
SourcePackage: duplicity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: duplicity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug artful wayland-session

** Description changed:

  The backup application (GUI) failed a couple of hours into its first
  attempt to write to an external disk after I upgraded to 17.10. The
  failure is "Backup Failed: Failed with an unknown error" and the
- following details:
+ following details. Note that I have 20GB of RAM, and there is no sign of
+ swap having been used.
  
  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 1416, in do_backup
-     globals.archive_dir).set_values()
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 710, 
in set_values
-     self.get_backup_chains(partials + backend_filename_list)
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 836, 
in get_backup_chains
-     add_to_sets(f)
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 824, 
in add_to_sets
-     if set.add_filename(filename):
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 101, 
in add_filename
-     self.set_manifest(filename)
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 148, 
in set_manifest
-     self.set_files_changed()
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 128, 
in set_files_changed
-     mf = self.get_manifest()
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 250, 
in get_manifest
-     return self.get_local_manifest()
-   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 224, 
in get_local_manifest
-     return manifest.Manifest().from_string(manifest_buffer)
-   File "/usr/lib/python2.7/dist-packages/duplicity/manifest.py", line 214, in 
from_string
-     for match in vi_iterator:
+   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 1416, in do_backup
+     globals.archive_dir).set_values()
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 710, 
in set_values
+     self.get_backup_chains(partials + backend_filename_list)
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 836, 
in get_backup_chains
+     add_to_sets(f)
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 824, 
in add_to_sets
+     if set.add_filename(filename):
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 101, 
in add_filename
+     self.set_manifest(filename)
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 148, 
in set_manifest
+     self.set_files_changed()
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 128, 
in set_files_changed
+     mf = self.get_manifest()
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 250, 
in get_manifest
+     return self.get_local_manifest()
+   File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 224, 
in get_local_manifest
+     return manifest.Manifest().from_string(manifest_buffer)
+   File "/usr/lib/python2.7/dist-packages/duplicity/manifest.py", line 214, in 
from_string
+     for match in vi_iterator:
  MemoryError
  
  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: duplicity 0.7.12-1ubuntu1
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.4
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Nov 20 08:12:07 2017
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2017-11-18 (2 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  SourcePackage: duplicity
  UpgradeStatus: No upgrade log present (probably fresh install)

** Description changed:

  The backup application (GUI) failed a couple of hours into its first
  attempt to write to an external disk after I upgraded to 17.10. The
  failure is "Backup Failed: Failed with an unknown error" and the
- following details. Note that I have 20GB of RAM, and there is no sign of
- swap having been used.
+ following details. Note that the machine has 20GB of RAM, and there is
+ no sign of swap having been used.
  
  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 1416, in do_backup
      globals.archive_dir).set_values()
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 710, 
in set_values
      self.get_backup_chains(partials + backend_filename_list)
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 836, 
in get_backup_chains
      add_to_sets(f)
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 824, 
in add_to_sets
      if set.add_filename(filename):
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 101, 
in add_filename
      self.set_manifest(filename)
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 148, 
in set_manifest
      self.set_files_changed()
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 128, 
in set_files_changed
      mf = self.get_manifest()
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 250, 
in get_manifest
      return self.get_local_manifest()
    File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 224, 
in get_local_manifest
      return manifest.Manifest().from_string(manifest_buffer)
    File "/usr/lib/python2.7/dist-packages/duplicity/manifest.py", line 214, in 
from_string
      for match in vi_iterator:
  MemoryError
  
  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: duplicity 0.7.12-1ubuntu1
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.4
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Nov 20 08:12:07 2017
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2017-11-18 (2 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  SourcePackage: duplicity
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/1733326

Title:
  Backup failed with an unknown error. .... MemoryError

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