package python-lockfile 1:0.12.2-1 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1

[Harshad Awati]

Need to get 37.4 kB/178 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://in.archive.ubuntu.com/ubuntu xenial/main amd64 python3-minimal amd64 3.5.1-3 [23.3 kB]
Get:2 http://in.archive.ubuntu.com/ubuntu xenial/main amd64 python-lockfile all 1:0.12.2-1 [14.1 kB]
Fetched 37.4 kB in 1s (20.9 kB/s)
(Reading database ... 291413 files and directories currently installed.)
Preparing to unpack .../python3-minimal_3.5.1-3_amd64.deb ...
Unpacking python3-minimal (3.5.1-3) over (3.5.1-3) ...
Preparing to unpack .../python-lockfile_1%3a0.12.2-1_all.deb ...
  File "/usr/bin/pyclean", line 63
    except (IOError, OSError), e:
                             ^
SyntaxError: invalid syntax
dpkg: warning: subprocess old pre-removal script returned error exit status 1
dpkg: trying script from the new package instead ...
  File "/usr/bin/pyclean", line 63
    except (IOError, OSError), e:
                             ^
SyntaxError: invalid syntax
dpkg: error processing archive /var/cache/apt/archives/python-lockfile_1%3a0.12.2-1_all.deb (--unpack):
 subprocess new pre-removal script returned error exit status 1
Traceback (most recent call last):
  File "/usr/bin/pycompile", line 35, in <module>
    from debpython.version import SUPPORTED, debsorted, vrepr, \
  File "/usr/share/python/debpython/version.py", line 24, in <module>
    from ConfigParser import SafeConfigParser
ImportError: No module named 'ConfigParser'
dpkg: error while cleaning up:
 subprocess installed post-installation script returned error exit status 1
Processing triggers for man-db (2.7.5-1) ...
Errors were encountered while processing:
 /var/cache/apt/archives/python-lockfile_1%3a0.12.2-1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python-lockfile 1:0.12.2-1
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Sat Jun 11 23:54:18 2016
Dependencies:

ErrorMessage: subprocess new pre-removal script returned error exit status 1
InstallationDate: Installed on 2016-02-20 (111 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: python-lockfile
Title: package python-lockfile 1:0.12.2-1 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Seth Arnold (seth-arnold)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.