[Bug 1902366] Re: Cannot upgrade 18.04 to 20.04

[Sean Meacher]

can't add this directly, so adding via dropbox
https://www.dropbox.com/s/vmu3ndr7zwbobrp/apt-clone_system_state.tar.gz?dl=0

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Title:
  Cannot upgrade 18.04 to 20.04

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

Bug description:
  So I'm trying to upgrade my storage machine (which I also use as a
  remote desktop) from 18.04 to 20.04 and the upgrader is failing.

  /var/log/dist-upgrade mentions
  2020-10-31 12:25:37,733 INFO installing python-is-python2 because python-minimal was installed
  2020-10-31 12:25:37,733 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
  2020-10-31 12:25:37,981 ERROR Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.'

  There aren't any held/broken packages.

  It seems a similar issue to this (with the mention of python-is-python2)
  https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1875523
  but the upgrader is already on 20.04.28

  I did have this ppa installed for some reason ppa:ubuntu-
  toolchain-r/test but removed that as one of the first troubleshooting
  steps (and then had to copy a lib file from another machine to fix
  apt...).

  But basically, is it something I've done or is it the upgrader?

  Thanks,
  Sean

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.40
  ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18
  Uname: Linux 4.15.0-122-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.18
  Architecture: amd64
  CrashDB: ubuntu
  Date: Sat Oct 31 12:26:08 2020
  InstallationDate: Installed on 2011-12-26 (3231 days ago)
  InstallationMedia: Ubuntu-Server 10.04.3 LTS "Lucid Lynx" - Release amd64 (20110719.2)
  PackageArchitecture: all
  ProcEnviron:
   LD_LIBRARY_PATH=<set>
   TERM=screen-256color-bce
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-10-31 (0 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz:
   Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
   Error executing command as another user: Not authorized
   
   This incident has been reported.

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