[Bug 1773989] Re: do-release-upgrade crashes

[Brian Murray]

The failure to calculate the upgrade was due in part because of packages
you have installed from a PPA. Please use the tool 'ppa-purge' to remove
the PPA and switch to package versions from the official Ubuntu archive.
After that try the upgrade again.

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

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https://bugs.launchpad.net/bugs/1773989

Title:
  do-release-upgrade crashes

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

Bug description:
  running do-release-upgrade results in generic error. Hopefully the
  attached logs will tell someone some more about the problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: ubuntu-release-upgrader-core 1:17.10.11
  ProcVersionSignature: Ubuntu 4.15.0-20.21~16.04.1-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  NonfreeKernelModules: vmwgfx pata_acpi
  ApportVersion: 2.20.7-0ubuntu3.8
  Architecture: amd64
  CrashDB: ubuntu
  Date: Sun May 27 16:54:50 2018
  InstallationDate: Installed on 2016-08-18 (647 days ago)
  InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to artful on 2018-05-27 (0 days ago)

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