[Bug 1974223] Re: FTBFS and autopkgtest failure since changes in apt for automatic kernel removal

[Łukasz Zemczak]

Hello Olivier, 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/1.1ubuntu1.18.04.15 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, what testing has been
performed on the package 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 for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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

** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1974223

Title:
  FTBFS and autopkgtest failure since changes in apt for automatic
  kernel removal

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

Bug description:
  [Impact]
  Since the following changes in apt have landed in focal-updates (and is currently in bionic-proposed), unattended-upgrades FTBFS and fails autopkgtest on both series:

    * Revert "Protect currently running kernel at run-time"
    * Backport Determine autoremovable kernels at run-time (LP: #1615381) as of
      2.4.5; including the change to only protect two kernels, not last installed
      one (LP: #1968154)

  ======================================================================
  FAIL: test_remove_unused_dependencies_new_unused_only (__main__.TestRemoveUnused)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "./test_remove_unused.py", line 165, in test_remove_unused_dependencies_new_unused_only
      haystack))
  AssertionError: False is not true : Can not find 'Removing unused kernel packages: linux-image-4.05.0-1021-kvm

  [Test plan]
  1. focal:
    * run autopkgtest against -updates:
      $ autopkgtest unattended-upgrades --apt-upgrade --apt-pocket=updates --test-name run-tests -- <virt-server ...>
    * try to build the package
  2. bionic:
    * run autopkgtest against -proposed:
      $ autopkgtest unattended-upgrades --apt-upgrade --apt-pocket=proposed --test-name run-tests -- <virt-server ...>
    * try to build the package

  [Where problems could occur]
    * The fix only affects the test-suite (that runs both at build time & autopkgtest time) so the impact should be minimal. Something wrong in the patch would make the unattended package FTBFS or fail autopkgtest but it is already failing ATM.
    * The new tests dependency on apt can trigger more autopkgtest runs. Since unattended-upgrades has a non-trivial autopkgtest suite, this can have a slight impact on the queues.

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