[Bug 1520462] [NEW] distribution upgrade failed

[Gavin Fleming]

Public bug reported:

my system is fully updated yet when I try a distrobution upgrade from
15.04 to 15.10 the upgrade tool fails to calculate the changes required.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubuntu-release-upgrader-core 1:15.04.14.3
ProcVersionSignature: Ubuntu 3.19.0-33.38-generic 3.19.8-ckt7
Uname: Linux 3.19.0-33-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Fri Nov 27 09:12:59 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-09-18 (1164 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to vivid on 2015-11-27 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade third-party-packages vivid

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https://bugs.launchpad.net/bugs/1520462

Title:
  distribution upgrade failed

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

Bug description:
  my system is fully updated yet when I try a distrobution upgrade from
  15.04 to 15.10 the upgrade tool fails to calculate the changes
  required.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: ubuntu-release-upgrader-core 1:15.04.14.3
  ProcVersionSignature: Ubuntu 3.19.0-33.38-generic 3.19.8-ckt7
  Uname: Linux 3.19.0-33-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.8
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Fri Nov 27 09:12:59 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-09-18 (1164 days ago)
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to vivid on 2015-11-27 (0 days ago)
  VarLogDistupgradeTermlog:

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