[Bug 1877244] [NEW] do-release-upgrade fails from18.04 to 20.04

[Michael]

Public bug reported:

Upgrade from 18.04 to 20.04 fails.
Purged all the ppa stuff using ppa-purge and tried again, still the same error
about 3rd party packages from ppa.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.37
ProcVersionSignature: Ubuntu 4.15.0-60.67-generic 4.15.18
Uname: Linux 4.15.0-60-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
CrashDB: ubuntu
Date: Thu May  7 10:58:29 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-01-15 (842 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-05-07 (0 days ago)

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic dist-upgrade

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https://bugs.launchpad.net/bugs/1877244

Title:
  do-release-upgrade fails from18.04 to 20.04

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

Bug description:
  Upgrade from 18.04 to 20.04 fails.
  Purged all the ppa stuff using ppa-purge and tried again, still the same error
  about 3rd party packages from ppa.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.37
  ProcVersionSignature: Ubuntu 4.15.0-60.67-generic 4.15.18
  Uname: Linux 4.15.0-60-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  CrashDB: ubuntu
  Date: Thu May  7 10:58:29 2020
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2018-01-15 (842 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-05-07 (0 days ago)

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