bzr crashed with AssertionError in create_from_tree()

Binary package hint: bzr

This crash occurred in the following context:

mizar:[~/src/apport/ubuntu-java] bzr merge ../java
bzr: ERROR: Working tree "/home/mdz/src/apport/ubuntu-java/" has uncommitted changes (See bzr status).
zsh: exit 3 bzr merge ../java
mizar:[~/src/apport/ubuntu-java] bzr merge --force ../java
bzr: ERROR: exceptions.AssertionError: Unknown kind 'absent'

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    attaching the crash file
        /home/mdz/.cache/crash/bzr-20100330165541-12101.crash
    and including a description of the problem.

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: bzr 2.1.1-1
ProcVersionSignature: Ubuntu 2.6.32-12.17-generic
Uname: Linux 2.6.32-12-generic i686
Architecture: i386
BzrDebugFlags: set()
BzrVersion: 2.1.1
CommandLine: ['/usr/bin/bzr', 'merge', '--force', '../java']
Date: Tue Mar 30 17:55:41 2010
ExecutablePath: /usr/bin/bzr
FileSystemEncoding: UTF-8
Locale: en_US.UTF-8
Platform: Linux-2.6.32-12-generic-i686-with-Ubuntu-10.04-lucid
PythonVersion: 2.6.5
SourcePackage: bzr
Title: bzr crashed with AssertionError in create_from_tree()
UserEncoding: UTF-8
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