Hello Balint, or anyone else affected,

Accepted unattended-upgrades into bionic-proposed. The package will
build now and be available at https://launchpad.net/ubuntu/+source
/unattended-upgrades/1.1ubuntu1.18.04.1 in a few hours, and then in the
-proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: unattended-upgrades (Ubuntu Bionic)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-bionic

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to unattended-upgrades in
Ubuntu.
https://bugs.launchpad.net/bugs/1775307

Title:
  Unattended-upgrades crashes in adjusting candidates in 1.2ubuntu1
  version

Status in unattended-upgrades package in Ubuntu:
  Fix Released
Status in unattended-upgrades source package in Bionic:
  Fix Committed

Bug description:
  [Impact]

   * Unattended-upgrades fails to install updates when adjusting
  candidates is needed.

  [Test Case]

  Note that only 1.2ubuntu1 is affected. Earlier releases either did not
  crash or did not adjust candidates due to LP: #1775292. To reproduce
  the crash Cosmic's u-u 1.2ubuntu1 needs to be installed.

   * Run sudo apt update && sudo unattended-upgrade --dry-run --verbose --debug
   * Observe no line with "adjusting candidate version: " or a crash with buggy 
u-u versions
  ...
  adjusting candidate version: zfs-initramfs=0.7.5-1ubuntu15
  adjusting candidate version: zfs-test=0.7.5-1ubuntu15
  adjusting candidate version: zfs-zed=0.7.5-1ubuntu15
  adjusting candidate version: zfsutils-linux=0.7.5-1ubuntu15
  Traceback (most recent call last):
    File "/usr/bin/unattended-upgrade", line 1928, in <module>
      sys.exit(main(options))
    File "/usr/bin/unattended-upgrade", line 1554, in main
      allowed_origins=allowed_origins)
    File "/usr/bin/unattended-upgrade", line 122, in __init__
      apt.Cache.__init__(self, rootdir=rootdir)
    File "/usr/lib/python3/dist-packages/apt/cache.py", line 130, in __init__
      self.open(progress)
    File "/usr/bin/unattended-upgrade", line 152, in open
      self.adjust_candidates()
    File "/usr/bin/unattended-upgrade", line 161, in adjust_candidates
      for pkgname, candidate in self._get_candidates_to_adjust():
  ValueError: too many values to unpack (expected 2) * Install fixed u-u version

   * Run sudo unattended-upgrade --dry-run --verbose --debug
   * Observe lines "adjusting candidate version: " and no crash

  [Regression Potential]

   * Unattended-upgrade may crash when adjusting candidates preventing
  upgrades to be installed

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