[Bug 1784916] [NEW] do-release-upgrade crash 14.04.5 -> 16.04.4

[Old Guy With Beard]

Public bug reported:

Attempting to upgrade existing stable up to date 14.04.5 AMD64 system to 16.04.4 using do-release-upgrade.
Many packages added locally to stock distribution.  Ran upgrade as root in single user mode.


LSB Version:	core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch

I am including a tarball of  /var/log/dist-upgrade

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


** Tags: do-release-upgrade

** Attachment added: "tarball of /var/log/dist-upgrade"
   https://bugs.launchpad.net/bugs/1784916/+attachment/5170530/+files/upgrade-bug-tar.bz2

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https://bugs.launchpad.net/bugs/1784916

Title:
  do-release-upgrade crash  14.04.5 -> 16.04.4

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

Bug description:
  Attempting to upgrade existing stable up to date 14.04.5 AMD64 system to 16.04.4 using do-release-upgrade.
  Many packages added locally to stock distribution.  Ran upgrade as root in single user mode.

  
  LSB Version:	core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch

  I am including a tarball of  /var/log/dist-upgrade

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