[Bug 1769613] Re: ubuntu-release-upgrader crashed

[dino99]

At first glance, these 2 'extra' sources could have introduced some
conflicts:

examining: 'deb http://repository.spotify.com stable non-free # Spotify'
DEBUG entry '# deb http://repository.spotify.com stable non-free # Spotify désactivé pour la mise à niveau vers bionic' was disabled (unknown mirror)
DEBUG examining: 'deb http://files.eid.belgium.be/debian artful main'
DEBUG entry '# deb http://files.eid.belgium.be/debian bionic main # désactivé pour la mise à niveau vers bionic' was disabled (unknown mirror)
DEBUG examining: 'deb http://files2.eid.belgium.be/debian artful main'
DEBUG entry '# deb http://files2.eid.belgium.be/debian bionic main # désactivé pour la mise à niveau vers bionic' was disabled (unknown mirror)
DEBUG running doUpdate() (showErrors=True)
DEBUG openCache()
DEBUG failed to SystemUnLock() (E:Non verrouillé) 
DEBUG /openCache(), new cache size 90789
DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
ERROR Dist-upgrade failed: 'E:Erreur, pkgProblem::Resolve a généré des ruptures, ce qui a pu être causé par les paquets devant être gardés en l'état.'
DEBUG abort called
DEBUG openCache()
DEBUG failed to SystemUnLock() (E:Non verrouillé)

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https://bugs.launchpad.net/bugs/1769613

Title:
  ubuntu-release-upgrader crashed

Status in ubuntu-release-upgrader package in Ubuntu:
  Incomplete

Bug description:
  ubuntu-release-upgrader refuses to upgrade my system

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: ubuntu-release-upgrader-core 1:17.10.11
  ProcVersionSignature: Ubuntu 4.13.0-39.44-generic 4.13.16
  Uname: Linux 4.13.0-39-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.8
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Mon May  7 12:07:35 2018
  InstallationDate: Installed on 2017-05-19 (352 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to artful on 2018-05-07 (0 days ago)
  VarLogDistupgradeTermlog:

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