[Bug 1775307] [NEW] Unattended-upgrades crashes in adjusting candidates in 1.2ubuntu1 version

[Balint Reczey]

Public bug reported:

...
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)

** Affects: unattended-upgrades (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1775307

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

Status in unattended-upgrades package in Ubuntu:
  New

Bug description:
  ...
  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)

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