[Bug 1986414] Re: upgrader crashes after few minutes

[Nick Rosbrook]

The problem appears to be that you have the PPA
https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test enabled.
E.g., this line from VarLogDistupgradeAptlog.txt:

  lib32stdc++6:amd64 Depends on gcc-12-base:amd64 < 12.1.0-2 @ii mK > (=
12-20220319-1ubuntu1) can't be satisfied!

Please try disabling that PPA and use the `ppa-purge` tool to remove the
versions installed from that PPA, so that your toolchain packages are
from the official focal archive. After that, please try the upgrade
again.

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

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https://bugs.launchpad.net/bugs/1986414

Title:
  upgrader crashes after few minutes

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

Bug description:
  Eror
  "unresolvable problem occurred while calculating upgrade"

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.38
  ProcVersionSignature: Ubuntu 5.15.0-46.49~20.04.1-generic 5.15.39
  Uname: Linux 5.15.0-46-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.24
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Aug 13 12:56:59 2022
  InstallationDate: Installed on 2022-03-07 (158 days ago)
  InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2022-08-13 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2022-08-13T07:28:33.892184

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