[Bug 1573404] Re: can not upgrade from 14.04 to 16.04

[Tom M]

*** This bug is a duplicate of bug 1519463 ***
    https://bugs.launchpad.net/bugs/1519463

** This bug has been marked a duplicate of bug 1519463
   Cannot upgrade from Ubuntu 14.04 to 16.04

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https://bugs.launchpad.net/bugs/1573404

Title:
  can not upgrade from 14.04 to 16.04

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

Bug description:
  last night upgrade from 14.04 to 16.04 , error massage show up. 
  normally used "sudo  do-release-upgrade" command.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.19.0-59.65~14.04.1-generic 3.19.8-ckt19
  Uname: Linux 3.19.0-59-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.20
  Architecture: amd64
  CrashDB: ubuntu
  Date: Fri Apr 22 11:59:16 2016
  InstallationDate: Installed on 2015-12-25 (118 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-04-22 (0 days ago)

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