[Bug 1903855] [NEW] Ubuntu 18.04 to 20.04 upgrade crashes

[Terence Cerou]

Public bug reported:

Attempting to upgrade Ubuntu 18.04 LTS to 20.04 LTS fails

Screen capture joined

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.40
ProcVersionSignature: Ubuntu 4.15.0-123.126-generic 4.15.18
Uname: Linux 4.15.0-123-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Nov 11 13:37:25 2020
InstallationDate: Installed on 2018-09-08 (794 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
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 bionic on 2020-11-11 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic dist-upgrade third-party-packages wayland-session

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https://bugs.launchpad.net/bugs/1903855

Title:
  Ubuntu 18.04 to 20.04 upgrade crashes

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

Bug description:
  Attempting to upgrade Ubuntu 18.04 LTS to 20.04 LTS fails

  Screen capture joined

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.40
  ProcVersionSignature: Ubuntu 4.15.0-123.126-generic 4.15.18
  Uname: Linux 4.15.0-123-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Nov 11 13:37:25 2020
  InstallationDate: Installed on 2018-09-08 (794 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  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 bionic on 2020-11-11 (0 days ago)
  VarLogDistupgradeTermlog:

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