[Bug 1769768] Re: upgrade-manager -cd crash at step 2

[Brian Murray]

*** This bug is a duplicate of bug 1611737 ***
    https://bugs.launchpad.net/bugs/1611737

** This bug has been marked a duplicate of bug 1611737
   Can't upgrade from a release if ros packages are  installed from ROS servers

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https://bugs.launchpad.net/bugs/1769768

Title:
  upgrade-manager -cd crash at step 2

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

Bug description:
  Impossible de calculer la mise à niveau

  Un problème insoluble est survenu durant le calcul de la mise à
  niveau.

   Ceci peut-être causé par :
   * la mise à niveau vers une préversion d’Ubuntu
   * l’exécution de la préversion actuelle d’Ubuntu
   * des paquets logiciels non officiels, non fournis par Ubuntu.

  Si rien de tout cela ne s'applique, veuillez rapporter ce bogue en
  utilisant la commande « ubuntu-bug ubuntu-release-upgrader-core » dans
  un terminal.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.8.0-41.44~16.04.1-generic 4.8.17
  Uname: Linux 4.8.0-41-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.16
  Architecture: amd64
  CrashDB: ubuntu
  Date: Mon May  7 18:42:22 2018
  InstallationDate: Installed on 2017-03-16 (417 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=fr_CA:fr
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=fr_CA.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-05-07 (0 days ago)
  VarLogDistupgradeTermlog:

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