[Bug 1493491] [NEW] Failure while attempting to upgrade from 14.04 to 14.10

[Jeremy Schwartz]

Public bug reported:

The only error I get is:

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

The upgrader does gracefully fail back to my current installation, but I
am unable to complete the upgrade.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.7
ProcVersionSignature: Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25
Uname: Linux 3.13.0-63-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.12
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Tue Sep  8 11:19:50 2015
InstallationDate: Installed on 2014-12-22 (260 days ago)
InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2015-09-08 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2015-09-08T11:05:29.181114

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


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

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https://bugs.launchpad.net/bugs/1493491

Title:
  Failure while attempting to upgrade from 14.04 to 14.10

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

Bug description:
  The only error I get is:

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  The upgrader does gracefully fail back to my current installation, but
  I am unable to complete the upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.7
  ProcVersionSignature: Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25
  Uname: Linux 3.13.0-63-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.12
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Tue Sep  8 11:19:50 2015
  InstallationDate: Installed on 2014-12-22 (260 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-09-08 (0 days ago)
  mtime.conffile..etc.update.manager.release.upgrades: 2015-09-08T11:05:29.181114

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