Log time: 2019-07-12 21:48:43.855485
Starting pkgProblemResolver with broken count: 3
Starting 2 pkgProblemResolver with broken count: 3
Investigating (0) libogdi4.1:amd64 < none -> 4.1.0+ds-1 @un uN Ib >
Broken libogdi4.1:amd64 Breaks on libogdi3.2:amd64 < 3.2.1+ds-4 @ii mK > (< 4.0.0)
  Considering libogdi3.2:amd64 -3 as a solution to libogdi4.1:amd64 1
  Added libogdi3.2:amd64 to the remove list
  Fixing libogdi4.1:amd64 via remove of libogdi3.2:amd64
Investigating (0) libmailutils6:amd64 < none -> 1:3.6-1 @un uN Ib >
Broken libmailutils6:amd64 Conflicts on libmailutils5:amd64 < 1:3.5-3 @ii mK Ib >
  Considering libmailutils5:amd64 -1 as a solution to libmailutils6:amd64 1
  Added libmailutils5:amd64 to the remove list
  Fixing libmailutils6:amd64 via remove of libmailutils5:amd64
Done
ERROR:root:Package net.downloadhelper.coapp has no priority set
ERROR:root:not handled exception:
Traceback (most recent call last):

  File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 114, in <module>
    controller.doPartialUpgrade()

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 2095, in doPartialUpgrade
    if not self.askDistUpgrade():

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1154, in askDistUpgrade
    changes = self.calcDistUpgrade()

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1117, in calcDistUpgrade
    if not self.cache.distUpgrade(self._view, self.serverMode, self._partialUpgrade):

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeCache.py", line 241, in wrapper
    res = f(*args, **kwargs)

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeCache.py", line 609, in distUpgrade
    self.keep_installed_rule()

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeCache.py", line 463, in keep_installed_rule
    and pkg.marked_delete and pkg.section == section):

AttributeError: 'Package' object has no attribute 'section'