Bzr crashes when executing log command over smart server protocol

[Nicholas Allen]

I tried to do a log over the smart server protocol and got this assertion (it works when using sftp instead of smart server):

bzr log bzr+ssh://user@site/project/branch
bzr: ERROR: exceptions.AssertionError:

Traceback (most recent call last):
~ File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 834,
in run_bzr_catch_errors
~ return run_bzr(argv)
~ File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 790,
in run_bzr
~ ret = run(*run_argv)
~ File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 492,
in run_argv_aliases
~ return self.run(**all_cmd_args)
~ File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 800,
in ignore_pipe
~ result = func(*args, **kwargs)
~ File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 1788,
in run
~ limit=limit)
~ File "/usr/lib/python2.5/site-packages/bzrlib/log.py", line 185, in
show_log
~ start_revision, end_revision, search, limit)
~ File "/usr/lib/python2.5/site-packages/bzrlib/log.py", line 215, in
_show_log
~ allow_single_merge_revision)
~ File "/usr/lib/python2.5/site-packages/bzrlib/log.py", line 273, in
calculate_view_revisions
~ view_revisions = _filter_revision_range(list(view_revs_iter),
~ File "/usr/lib/python2.5/site-packages/bzrlib/log.py", line 519, in
get_view_revisions
~ graph.iter_ancestry(mainline_revs) if value is not None))
~ File "/usr/lib/python2.5/site-packages/bzrlib/log.py", line 518, in
<genexpr>
~ parent_map = dict(((key, value) for key, value in
~ File "/usr/lib/python2.5/site-packages/bzrlib/graph.py", line 442, in
iter_ancestry
~ next_map = self.get_parent_map(pending)
~ File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 805, in
get_parent_map
~ parent_map = self._get_parent_map(missing_revisions)
~ File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 883, in
_get_parent_map
~ assert type(key) is str
AssertionError

bzr 1.4dev on python 2.5.1 (linux2)
arguments: ['/usr/bin/bzr', 'log', 'bzr+ssh://user@site/project/branch']
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
/usr/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
~ loom /home/nick/.bazaar/plugins/loom [1.3.0dev0]
~ multiparent
/usr/lib/python2.5/site-packages/bzrlib/plugins/multiparent.py [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.