package python3-apport 2.14.1-0ubuntu3.18 failed to install/upgrade: Paket ist in einem sehr schlechten inkonsistenten Zustand - Sie sollten es nochmal installieren, bevor Sie die Konfiguration versuchen.

[Impact]
------
The general Ubuntu apport hook can receive a Traceback if DpkgTerminalLog is empty. While its a minor issue it results in extra attachments being sent to Launchpad and should be sorted out.

This was fixed in Xenial.

[Test Case]
-----------
1) Install apport
2) cd /usr/share/apport/general-hooks
3) Run the following
(trusty-amd64)root@impulse:/usr/share/apport/general-hooks# python3
Python 3.4.3 (default, Nov 17 2016, 01:08:31)
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import apport
>>> import ubuntu
>>> report = apport.Report()
>>> report['DpkgTerminalLog'] = ''
>>> ubuntu.trim_dpkg_log(report)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/share/apport/general-hooks/ubuntu.py", line 437, in trim_dpkg_log
    if isinstance(lines[0], str):
IndexError: list index out of range

With the version of apport from -proposed one will no longer receive a Traceback.

[Regression Potential]
None as we just return if lines is empty.

ProblemType: PackageDistroRelease: Ubuntu 14.04
Package: python3-apport 2.14.1-0ubuntu3.18
ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
Uname: Linux 3.13.0-74-generic i686
ApportLog:

ApportVersion: 2.14.1-0ubuntu3.18
Architecture: i386
Date: Sun Jan 10 13:49:13 2016
ErrorMessage: Paket ist in einem sehr schlechten inkonsistenten Zustand - Sie sollten es nochmal installieren, bevor Sie die Konfiguration versuchen.
InstallationDate: Installed on 2012-02-02 (1437 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10SourcePackage: apport
Title: package python3-apport 2.14.1-0ubuntu3.18 failed to install/upgrade: Paket ist in einem sehr schlechten inkonsistenten Zustand - Sie sollten es nochmal installieren, bevor Sie die Konfiguration versuchen.
UpgradeStatus: Upgraded to trusty on 2014-10-04 (462 days ago)