Latest Bazaar crashes when executing "./bzr log NEWS" on its own source code

[Nicholas Allen]

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I pulled the latest changes of bzr.dev this morning and tried to use it
to display a log of the NEWS file. Bazaar crashes with this exception:

bzr: ERROR: exceptions.KeyError:
'john at arbash-meinel.com-20050711051006-2d11704675600e95'

Traceback (most recent call last):
~  File "/home/nick/source/bzr.dev/bzrlib/commands.py", line 846, in
run_bzr_catch_errors
~    return run_bzr(argv)
~  File "/home/nick/source/bzr.dev/bzrlib/commands.py", line 802, in run_bzr
~    ret = run(*run_argv)
~  File "/home/nick/source/bzr.dev/bzrlib/commands.py", line 504, in
run_argv_aliases
~    return self.run(**all_cmd_args)
~  File "/home/nick/source/bzr.dev/bzrlib/commands.py", line 812, in
ignore_pipe
~    result = func(*args, **kwargs)
~  File "/home/nick/source/bzr.dev/bzrlib/builtins.py", line 1791, in run
~    limit=limit)
~  File "/home/nick/source/bzr.dev/bzrlib/log.py", line 185, in show_log
~    start_revision, end_revision, search, limit)
~  File "/home/nick/source/bzr.dev/bzrlib/log.py", line 215, in _show_log
~    allow_single_merge_revision)
~  File "/home/nick/source/bzr.dev/bzrlib/log.py", line 282, in
calculate_view_revisions
~    view_revisions)
~  File "/home/nick/source/bzr.dev/bzrlib/log.py", line 482, in
_filter_revisions_touching_file_id
~    rev_ancestry = rev_ancestry.union(ancestry[parent])
KeyError: 'john at arbash-meinel.com-20050711051006-2d11704675600e95'

bzr 1.4dev on python 2.5.1 (linux2)
arguments: ['./bzr', 'log', 'NEWS']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_GB.UTF-8'
plugins:
~  difftools            /home/nick/.bazaar/plugins/difftools [unknown]
~  gtk                  /home/nick/.bazaar/plugins/gtk [0.94.0dev0]
~  launchpad
/home/nick/source/bzr.dev/bzrlib/plugins/launchpad [unknown]
~  loom                 /home/nick/.bazaar/plugins/loom [1.3.0dev0]
~  multiparent
/home/nick/source/bzr.dev/bzrlib/plugins/multiparent.pyc [unknown]
~  qbzr
/usr/lib/python2.5/site-packages/bzrlib/plugins/qbzr [0.8.0dev0]
~  svn                  /home/nick/.bazaar/plugins/svn [0.5.0exp0]
~  xmloutput            /home/nick/.bazaar/plugins/xmloutput [0.4.1]
*** Bazaar has encountered an internal error.
~    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
~    including this traceback, and a description of what you
~    were doing when the error occurred.
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