[Bug 1921593] Re: do-release-upgrade fails with no error

[Brian Murray]

You seem to have installed some packages from the release of Ubuntu to
which you are trying to upgrade (Ubuntu 20.04) on your system and that
is likely breaking the ability to calculate the upgrade. The problematic
packages are likely libpython2-stdlib python-is-python2 python2 and
python2-minimal. Please try removing those packages and then upgrading
again.

The complete list of strange packages follows:

Installed in the clone-file but not in the system:

borgmatic gcc-10-base libcrypt-dev libcrypt1 libgcc-s1 libpython2-stdlib
python-is-python2 python2 python2-minimal python3-pykwalify


** Tags removed: rls-ff-incoming

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

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https://bugs.launchpad.net/bugs/1921593

Title:
  do-release-upgrade fails with no error

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

Bug description:
  $ lsb_release -rd
  Description:    Ubuntu 18.04.5 LTS
  Release:        18.04

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.42
  ProcVersionSignature: Ubuntu 4.15.0-139.143-generic 4.15.18
  Uname: Linux 4.15.0-139-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  Date: Sat Mar 27 19:10:01 2021
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-03-27 (0 days ago)

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