[Bug 1321959] Re: upgrade from trusty to utopic failed

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu-release-upgrader

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https://bugs.launchpad.net/bugs/1321959

Title:
  upgrade from trusty to utopic failed

Status in “ubuntu-release-upgrader” package in Ubuntu:
  In Progress

Bug description:
  
  A fatal error occurred

  Please report this as a bug and include the files
  /var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log in
  your report. The upgrade has aborted.
  Your original sources.list was saved in
  /etc/apt/sources.list.distUpgrade.

  Traceback (most recent call last):

  File "/tmp/ubuntu-release-upgrader-nyys21ya/utopic", line 8, in
  <module>
  sys.exit(main())

  File
  "/tmp/ubuntu-release-upgrader-nyys21ya/DistUpgrade/DistUpgradeMain.py",
  line 239, in main
  if app.run():

  File
  "/tmp/ubuntu-release-upgrader-nyys21ya/DistUpgrade/DistUpgradeController.py",
  line 1820, in run
  return self.fullUpgrade()

  File
  "/tmp/ubuntu-release-upgrader-nyys21ya/DistUpgrade/DistUpgradeController.py",
  line 1722, in fullUpgrade
  if not self.doUpdate():

  File
  "/tmp/ubuntu-release-upgrader-nyys21ya/DistUpgrade/DistUpgradeController.py",
  line 928, in doUpdate
  "connection and retry."), "%s" % e)

  UnboundLocalError: local variable 'e' referenced before assignment

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