When doing fastimport from Mercurial bzr crashed with AttributeError in load_using_delta(): 'PackRootCommitBuilder' object has no attribute '_config'

[Fila Kolodny]

I was importing a Mercurial repository into bzr when this happened.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: bzr 2.5.0~beta5-3ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic 3.2.5
Uname: Linux 3.2.0-15-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
BzrDebugFlags: set()
BzrVersion: 2.5b5
CommandLine: ['/usr/bin/bzr', 'fast-import', '-']
CrashDb: bzr
Date: Fri Feb 10 12:04:50 2012
DuplicateOf: https://bugs.launchpad.net/bugs/923031
ExecutablePath: /usr/bin/bzr
FileSystemEncoding: UTF-8
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
InterpreterPath: /usr/bin/python2.7
Locale: en_US.UTF-8
PackageArchitecture: all
Platform: Linux-3.2.0-15-generic-x86_64-with-Ubuntu-12.04-precise
ProcCmdline: /usr/bin/python /usr/bin/bzr fast-import -
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
PythonVersion: 2.7.2
SourcePackage: bzr
Title: bzr crashed with AttributeError in load_using_delta(): 'PackRootCommitBuilder' object has no attribute '_config'
UpgradeStatus: Upgraded to precise on 2012-02-09 (1 days ago)
UserEncoding: utf-8
UserGroups: adm cdrom dip lpadmin plugdev 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 #923031, 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.