[Bug 1753045] [NEW] "Could not calculate the upgrade" trying to upgrade from 14.04 to 16.04.

[Luke Johnson]

Public bug reported:

I am trying to upgrade from 14.04 to 16.04.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.9
ProcVersionSignature: Ubuntu 3.13.0-142.191-generic 3.13.11-ckt39
Uname: Linux 3.13.0-142-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sat Mar  3 01:32:09 2018
InstallationDate: Installed on 2014-12-24 (1165 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2018-03-03 (0 days ago)
VarLogDistupgradeTermlog:
 
mtime.conffile..etc.update.manager.release.upgrades: 2018-03-03T00:19:11.327790

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


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

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https://bugs.launchpad.net/bugs/1753045

Title:
  "Could not calculate the upgrade" trying to upgrade from 14.04 to
  16.04.

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

Bug description:
  I am trying to upgrade from 14.04 to 16.04.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.9
  ProcVersionSignature: Ubuntu 3.13.0-142.191-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-142-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.27
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sat Mar  3 01:32:09 2018
  InstallationDate: Installed on 2014-12-24 (1165 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2018-03-03 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2018-03-03T00:19:11.327790

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