[Bug 1249649] [NEW] upgrade aborts; installArchives() failed

[N7DR]

Public bug reported:

Am attaching, as requested, the files in /var/log/dist-upgrade

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

** Attachment added: "apt.log"
   https://bugs.launchpad.net/bugs/1249649/+attachment/3904016/+files/apt.log

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https://bugs.launchpad.net/bugs/1249649

Title:
  upgrade aborts; installArchives() failed

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

Bug description:
  Am attaching, as requested, the files in /var/log/dist-upgrade

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