[Bug 1923656] Re: Can't upgrade to Ubuntu 20.04 due to python issues

[Brian Murray]

Thanks for taking the time to report this upgrade failure. There is
currently a new version of the release upgrader available in -proposed
which may resolve the error you've encountered. Please run the following
command to test the new version of the upgrader:

  do-release-upgrade -p

Please lets us know the results in this bug report. Thanks again and
good luck!

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Confirmed => Incomplete

** Tags added: lp-1928397

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https://bugs.launchpad.net/bugs/1923656

Title:
  Can't upgrade to Ubuntu 20.04 due to python issues

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

Bug description:
  Can't upgrade to Ubuntu 20.04, even with -p switch. Getting plenty of
  following messages in apt.log

  Broken python-is-python2:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
    Considering python2:amd64 1 as a solution to python-is-python2:amd64 -1
    Ignore MarkKeep of python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib > as its mode (Install) is protected
    Removing python-is-python2:amd64 rather than change python2:amd64
    Ignore MarkDelete of python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib > as its mode (Install) is protected

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.42
  ProcVersionSignature: Ubuntu 4.15.0-141.145-generic 4.15.18
  Uname: Linux 4.15.0-141-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue Apr 13 21:12:59 2021
  InstallationDate: Installed on 2018-03-28 (1111 days ago)
  InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-04-13 (0 days ago)

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