[Bug 1926896] Re: An unresolvable problem occurred while calculating the upgrade. This was caused by: * Upgrading to a pre-release version of Ubuntu This is most likely a transient problem, please try again later. If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a 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'.

[Ubuntu Foundations Team Bug Bot]

The attachment "critical" seems to be a patch.  If it isn't, please
remove the "patch" flag from the attachment, remove the "patch" tag, and
if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issues please contact him.]

** Tags added: patch

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https://bugs.launchpad.net/bugs/1926896

Title:
   An unresolvable problem occurred while calculating the upgrade.
  This was caused by:  * Upgrading to a pre-release version of Ubuntu
  This is most likely a transient problem,  please try again later. If
  none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a 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:
  
  An unresolvable problem occurred while calculating the upgrade.

   This was caused by:
   * Upgrading to a pre-release version of Ubuntu
  This is most likely a transient problem, 
  please try again later.
  If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a 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'.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: ubuntu-release-upgrader-core 1:20.10.15
  ProcVersionSignature: Ubuntu 5.8.0-50.56-generic 5.8.18
  Uname: Linux 5.8.0-50-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50.5
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sun May  2 20:43:51 2021
  InstallationDate: Installed on 2021-01-17 (104 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to groovy on 2021-05-02 (0 days ago)
  VarLogDistupgradeTermlog:

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