[Bug 1449378] [NEW] Unable to upgrade from 14.04 to 15.04

[Abhijeet]

Public bug reported:

Sorry, I'm pretty much a newbie, but  I got an error when trying to
upgrade from 14.04 to 15.04 directly.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.7
ProcVersionSignature: Ubuntu 3.13.0-49.83-generic 3.13.11-ckt17
Uname: Linux 3.13.0-49-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME
Date: Tue Apr 28 11:50:50 2015
InstallationDate: Installed on 2012-07-08 (1024 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2015-04-28 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2015-03-30T11:35:06.875236

** 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/1449378

Title:
  Unable to upgrade from 14.04 to 15.04

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

Bug description:
  Sorry, I'm pretty much a newbie, but  I got an error when trying to
  upgrade from 14.04 to 15.04 directly.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.7
  ProcVersionSignature: Ubuntu 3.13.0-49.83-generic 3.13.11-ckt17
  Uname: Linux 3.13.0-49-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: GNOME
  Date: Tue Apr 28 11:50:50 2015
  InstallationDate: Installed on 2012-07-08 (1024 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2015-04-28 (0 days ago)
  mtime.conffile..etc.update.manager.release.upgrades: 2015-03-30T11:35:06.875236

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