[Bug 1682682] Re: Upgrade from 16.10 to 17.04 failed

[Brian Murray]

It looks like you have a version of rabbitmq-server which is not
provided by the official Ubuntu archive.

rabbitmq-server 3.6.5-1 0

Please try removing that package and then upgrading again.  Additional
information about the upgrade process can be found in /var/log/dist-
upgrade/apt.log if you want to do some detective work.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Confirmed => Incomplete

** Summary changed:

- Upgrade from 16.10 to 17.04 failed
+ Upgrade from 16.10 to 17.04 failed due to rabbitmq-server

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https://bugs.launchpad.net/bugs/1682682

Title:
  Upgrade from 16.10 to 17.04 failed due to rabbitmq-server

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

Bug description:
  I tried to upgrade to 17.04 and it started out okay, but then said

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

   This can be caused by:
   * Upgrading to a pre-release version of Ubuntu
   * Running the current pre-release version of Ubuntu
   * Unofficial software packages not provided by Ubuntu

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.

  
  I don't think any of that applies, so I ran the command in a terminal.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: ubuntu-release-upgrader-core 1:16.10.10
  ProcVersionSignature: Ubuntu 4.8.0-46.49-generic 4.8.17
  Uname: Linux 4.8.0-46-generic x86_64
  ApportVersion: 2.20.3-0ubuntu8.2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Thu Apr 13 20:05:16 2017
  InstallationDate: Installed on 2014-10-25 (901 days ago)
  InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to yakkety on 2017-04-13 (0 days ago)
  VarLogDistupgradeTermlog:

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