[Bug 1986346] [NEW] upgrade to 22.04.1 failed - AttributeError: 'DistUpgradeController' object has no attribute 'tasks'

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sudo dist-upgrade fails while installing packages :- don't know if
system is now broken, or how to complete the upgrade. this is pretty
horrible.

Calculating the changes

Calculating the changes

Traceback (most recent call last):
  File "/tmp/ubuntu-release-upgrader-tm0grze3/jammy", line 8, in <module>
    sys.exit(main())
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeMain.py", line 241, in main
    if app.run():
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeController.py", line 2042, in run
    return self.fullUpgrade()
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeController.py", line 1991, in fullUpgrade
    if not self.calcDistUpgrade():
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeController.py", line 1100, in calcDistUpgrade
    if not self.cache.installTasks(self.tasks):
AttributeError: 'DistUpgradeController' object has no attribute 'tasks'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/problem_report.py", line 477, in add_to_existing
    self.write(f)
  File "/usr/lib/python3/dist-packages/problem_report.py", line 430, in write
    block = f.read(1048576)
  File "/usr/lib/python3.8/codecs.py", line 322, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte

Original exception was:
Traceback (most recent call last):
  File "/tmp/ubuntu-release-upgrader-tm0grze3/jammy", line 8, in <module>
    sys.exit(main())
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeMain.py", line 241, in main
    if app.run():
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeController.py", line 2042, in run
    return self.fullUpgrade()
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeController.py", line 1991, in fullUpgrade
    if not self.calcDistUpgrade():
  File "/tmp/ubuntu-release-upgrader-tm0grze3/DistUpgrade/DistUpgradeController.py", line 1100, in calcDistUpgrade
    if not self.cache.installTasks(self.tasks):
AttributeError: 'DistUpgradeController' object has no attribute 'tasks'

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


** Tags: bot-comment
-- 
upgrade to 22.04.1 failed - AttributeError: 'DistUpgradeController' object has no attribute 'tasks'
https://bugs.launchpad.net/bugs/1986346
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