[Bug 1020462] Re: Precise to Quantal upgrade failed: do-release-upgrade -d failed with ImportError: No module named janitor.plugincore.manager in DistUpgradeQuirks.py

[Guy Van Sanden]

Bug still present on ubuntu-release-upgrader-core
1:0.170ubuntu1

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https://bugs.launchpad.net/bugs/1020462

Title:
  Precise to Quantal upgrade failed: do-release-upgrade -d failed with
  ImportError: No module named janitor.plugincore.manager in
  DistUpgradeQuirks.py

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Fix Released
Status in “ubuntu-release-upgrader” source package in Quantal:
  Fix Released

Bug description:
  Automated desktop upgrade test from Precise to Quantal failed in
  Jenkins,  it crashes when upgrding from the command line with: do-
  release-upgrade -d

  Link to failed build:
  https://jenkins.qa.ubuntu.com/view/Quantal/view/All%20Quantal/job/quantal-upgrade-precise-desktop/ARCH=i386,LTS=non-lts,PROFILE=desktop,label=upgrade-test/51/

  Findings in log file of the test(refer to comment #1 for detail) :
  .......
  .......
  Get:2 Upgrade tool [1,128 kB]

  2% 4,636 B/s 3min 57s
  100% [Working] 4,636 B/s 0s
  Fetched 1,128 kB in 6s (4,636 B/s)
  authenticate 'quantal.tar.gz' against 'quantal.tar.gz.gpg' 
  extracting 'quantal.tar.gz'
  Traceback (most recent call last):
    File "/tmp/update-manager-yKyOGK/quantal", line 6, in <module>
      from DistUpgrade.DistUpgradeMain import main
    File "/tmp/update-manager-yKyOGK/DistUpgrade/DistUpgradeMain.py", line 56, in <module>
      from .DistUpgradeController import DistUpgradeController
    File "/tmp/update-manager-yKyOGK/DistUpgrade/DistUpgradeController.py", line 65, in <module>
      from .DistUpgradeQuirks import DistUpgradeQuirks
    File "/tmp/update-manager-yKyOGK/DistUpgrade/DistUpgradeQuirks.py", line 40, in <module>
      from janitor.plugincore.manager import PluginManager
  ImportError: No module named janitor.plugincore.manager
  scp: /var/log/dist-upgrade/*: No such file or directory

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