apt-get crashed with signal 7 in pkgPolicy::GetCandidateVer()

[Elroy]

Unknown crash

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: apt 0.9.15.1ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3
Uname: Linux 3.13.0-10-generic x86_64
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
Date: Wed Feb 19 12:28:14 2014
ExecutablePath: /usr/bin/apt-get
InstallationDate: Installed on 2014-01-11 (42 days ago)
InstallationMedia: This
ProcCmdline: apt-get upgrade
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 LANGUAGE=en_US
 SHELL=/bin/bash
Signal: 7
SourcePackage: apt
StacktraceTop:
 pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 pkgDepCache::Init(OpProgress*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 pkgCacheFile::BuildDepCache(OpProgress*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 pkgCacheFile::Open(OpProgress*, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 ?? () from /usr/lib/x86_64-linux-gnu/libapt-private.so.0.0
Title: apt-get crashed with signal 7 in pkgPolicy::GetCandidateVer()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #953574, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.