this looks mostly like file system corruption. Please try to reinstall the apt-xapian-index package.
** Changed in: python3-defaults (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to python3-defaults in Ubuntu. https://bugs.launchpad.net/bugs/1571396 Title: py3clean crashed with Exception in from_package(): cannot get content of apt-xapian-index Status in python3-defaults package in Ubuntu: Invalid Bug description: when use apt-get install ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: python3-minimal 3.5.1-3 ProcVersionSignature: Ubuntu 4.4.0-13.29-generic 4.4.5 Uname: Linux 4.4.0-13-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CrashCounter: 1 Date: Sun Apr 17 16:17:51 2016 ExecutablePath: /usr/bin/py3clean InstallationDate: Installed on 2015-10-18 (182 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) InterpreterPath: /usr/bin/python3.5 ProcCmdline: /usr/bin/python3 /usr/bin/py3clean -p apt-xapian-index /usr/share/apt-xapian-index PythonArgs: ['/usr/bin/py3clean', '-p', 'apt-xapian-index', '/usr/share/apt-xapian-index'] SourcePackage: python3-defaults Title: py3clean crashed with Exception in from_package(): cannot get content of apt-xapian-index UpgradeStatus: Upgraded to xenial on 2016-02-08 (69 days ago) UserGroups: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python3-defaults/+bug/1571396/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp