pacman crashed with SIGSEGV in __libc_start_main()

[martyfelker]

Ubuntu 13.10 KDE

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: xscreensaver-data-extra 5.15-2ubuntu2
ProcVersionSignature: Ubuntu 3.10.0-2.11-generic 3.10.0
Uname: Linux 3.10.0-2-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.10.2-0ubuntu4
Architecture: amd64
Date: Sat Jul 13 17:03:40 2013
ExecutablePath: /usr/lib/xscreensaver/pacman
ExecutableTimestamp: 1367929476
InstallationDate: Installed on 2013-07-13 (0 days ago)
InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Alpha amd64 (20130712)
MarkForUpload: True
ProcCmdline: pacman -root
ProcCwd: /home/marty
ProcEnviron:
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x4084bf: cmp 0xdb8(%rdi),%esi
 PC (0x004084bf) ok
 source "0xdb8(%rdi)" (0x01d56004) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: xscreensaver
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()
 __libc_start_main (main=0x4027f0, argc=2, ubp_av=0x7fffb5dc4568, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb5dc4558) at libc-start.c:260
Title: pacman crashed with SIGSEGV in __libc_start_main()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev root sambashare sudo

[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 #1196251, 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.