[Bug 1524085] Re: package update-notifier-common 3.163 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Steve Langasek]

The full error in the log is:

Processing triggers for update-notifier-common (3.163) ...
Traceback (most recent call last):
  File "/usr/lib/update-notifier/package-data-downloader", line 24, in <module>
    import debian.deb822
  File "/usr/lib/python3/dist-packages/debian/deb822.py", line 47, in <module>
    import six
ImportError: No module named 'six'
dpkg: error processing package update-notifier-common (--unpack):

The /usr/lib/python3/dist-packages/debian/deb822.py file belongs to the
python3-debian package, which in 15.10 depends on python3-six.

Please show the output of the following commands:

$ dpkg -l python3-six python3-debian
$ ls -l /usr/lib/python3/dist-packages/six.py

** Changed in: update-notifier (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1524085

Title:
  package update-notifier-common 3.163 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 1

Status in update-notifier package in Ubuntu:
  Incomplete

Bug description:
  I'm using Ubuntu 15.10 and I was updating packages but when system is processing flashplugin package, all goes bad and I have ImportError, six not found..
  I already have it!! Tried with pip, pip3 and easy_install... Tried also the upgrade command but no way, error still remain..

  ProblemType: Package
  DistroRelease: Ubuntu 15.10
  Package: update-notifier-common 3.163
  Uname: Linux 4.2.5-040205-lowlatency x86_64
  NonfreeKernelModules: nvidia wl
  ApportVersion: 2.19.1-0ubuntu5
  AptOrdering:
   flashplugin-installer: Install
   numix-icon-theme: Install
   flashplugin-installer: Configure
   numix-icon-theme: Configure
   NULL: ConfigurePending
  Architecture: amd64
  Date: Tue Dec  8 23:16:46 2015
  DuplicateSignature: package:update-notifier-common:3.163:subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2015-10-23 (46 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  PackageArchitecture: all
  RelatedPackageVersions:
   dpkg 1.18.2ubuntu5.1
   apt  1.0.10.2ubuntu1
  SourcePackage: update-notifier
  Title: package update-notifier-common 3.163 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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