[Bug 1900100] Re: An unresolvable problem occurred while calculating the upgrade. Si rien de tout cela ne s'applique, veuillez signaler ce bogue en utilisant la commande « ubuntu-bug ubuntu-release-upgrader-core » dans un terminal.If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'.

[Eduardo Barretto]

Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug.  I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

** Information type changed from Private Security to Public

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https://bugs.launchpad.net/bugs/1900100

Title:
  An unresolvable problem occurred while calculating the upgrade.   Si
  rien de tout cela ne s'applique, veuillez signaler ce bogue en
  utilisant la commande « ubuntu-bug ubuntu-release-upgrader-core » dans
  un terminal.If you want to investigate this yourself the log files in
  '/var/log/dist-upgrade' will contain details about the upgrade.
  Specifically, look at 'main.log' and 'apt.log'.

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

Bug description:
  upgrading ubuntu 14.04 to version 18.04

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.30
  ProcVersionSignature: Ubuntu 4.4.0-193.224-generic 4.4.236
  Uname: Linux 4.4.0-193-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.24
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Fri Oct 16 08:29:59 2020
  InstallationDate: Installed on 2014-03-02 (2419 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120425-15:28
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2020-10-16 (0 days ago)
  VarLogDistupgradeTermlog:

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