[Bug 1447936] [NEW] upgrade from 14.10 to 15.05 error

[Gromov Yuriy]

Public bug reported:

After do-release-upgrade process can not complete.

Error:

Could not calculate the upgrade

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
ProcVersionSignature: Ubuntu 3.16.0-36.48-generic 3.16.7-ckt9
Uname: Linux 3.16.0-36-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: amd64
CrashDB: ubuntu
Date: Fri Apr 24 10:26:07 2015
InstallationDate: Installed on 2014-12-01 (143 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-04-24 (0 days ago)
VarLogDistupgradeTermlog:

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


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

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https://bugs.launchpad.net/bugs/1447936

Title:
  upgrade from 14.10 to 15.05 error

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

Bug description:
  After do-release-upgrade process can not complete.

  Error:

  Could not calculate the upgrade

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-release-upgrader-core 1:14.10.10
  ProcVersionSignature: Ubuntu 3.16.0-36.48-generic 3.16.7-ckt9
  Uname: Linux 3.16.0-36-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.4
  Architecture: amd64
  CrashDB: ubuntu
  Date: Fri Apr 24 10:26:07 2015
  InstallationDate: Installed on 2014-12-01 (143 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to utopic on 2015-04-24 (0 days ago)
  VarLogDistupgradeTermlog:

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