Attempting to upgrade Ubuntu to 15.10 version from 15.04. package libpython2.7-stdlib 2.7.9-2ubuntu3 failed to install/upgrade: cannot copy extracted data for './usr/lib/python2.7/tarfile.py' to '/usr/lib/python2.7/tarfile.py.dpkg-new': unexpected end of file or stream

[Brian]

Upgrade appears to have failed. lsb_release -rd reports 15.10 but it has not upgraded.
It appeared that a number of packages failed to install and system did not restart. This bug report tool appeared when I selected myself to restart the system.

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: libpython2.7-stdlib 2.7.9-2ubuntu3
ProcVersionSignature: Ubuntu 3.19.0-51.58-generic 3.19.8-ckt13
Uname: Linux 3.19.0-51-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
Date: Thu Mar 10 21:17:48 2016
DuplicateSignature: package:libpython2.7-stdlib:2.7.9-2ubuntu3:cannot copy extracted data for './usr/lib/python2.7/tarfile.py' to '/usr/lib/python2.7/tarfile.py.dpkg-new': unexpected end of file or stream
ErrorMessage: cannot copy extracted data for './usr/lib/python2.7/tarfile.py' to '/usr/lib/python2.7/tarfile.py.dpkg-new': unexpected end of file or stream
InstallationDate: Installed on 2015-06-13 (271 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: python2.7
Title: package libpython2.7-stdlib 2.7.9-2ubuntu3 failed to install/upgrade: cannot copy extracted data for './usr/lib/python2.7/tarfile.py' to '/usr/lib/python2.7/tarfile.py.dpkg-new': unexpected end of file or stream
UpgradeStatus: Upgraded to wily on 2016-03-10 (0 days ago)

[Brian (brianb-8)]

There was also some message about missing architecture.

[Brian (brianb-8)]

Is it related to this bug? #1544781

[Brian (brianb-8)]

Could it be just that the package on the server is corrupted?

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that there was an error on your system when trying to install a particular package. Please execute the following command, as it will clear your package cache, in a terminal:

sudo apt-get clean

Then try performing the update again. This will likely resolve your issue, but the failure could be caused by filesystem or memory corruption. So please also run a fsck on your filesystem(s) and a memory test. Thanks in advance!

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]