Comment 4 for bug 819584

Eventually the checkout finished. On irc jelmer suggested that it was slow because 2.4 copies more revisions than earlier versions of bzr did.

Shortly after it finished, this happened:

bzr: failed to report crash using apport:
     OSError(17, 'File exists')
bzr: ERROR: exceptions.AssertionError: no lhs parent revmeta found for <bzrlib.plugins.svn.revmeta.CachingBzrMetaRevision object at 0x714aa70>

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 946, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 1150, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 699, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 721, in run
    return self._operation.run_simple(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/cleanup.py", line 135, in run_simple
    self.cleanups, self.func, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/cleanup.py", line 165, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/builtins.py", line 1408, in run
    accelerator_tree, hardlink)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/branch.py", line 375, in create_checkout
    hardlink=hardlink)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/branch.py", line 320, in _create_heavyweight_checkout
    checkout_branch.pull(self, stop_revision=revision_id)
  File "/usr/lib/python2.7/dist-packages/bzrlib/branch.py", line 1108, in pull
    possible_transports=possible_transports, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/branch.py", line 802, in pull
    stop_revision, overwrite)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/branch.py", line 734, in _update_revisions
    self.fetch(stop_revision=stop_revision, fetch_tags=fetch_tags)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/branch.py", line 705, in fetch
    d = resolve_tags_svn_ancestry(self.source, tag_revmetas)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/tags.py", line 94, in resolve_tags_svn_ancestry
    pb=pb):
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/repository.py", line 845, in _iter_reverse_revmeta_mapping_ancestry
    rhs_parent_foreign_revid, rhs_parent_mapping = self.lookup_bzr_revision_id(rhs_parent_revid, foreign_sibling=revmeta.metarev.get_foreign_revid())
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/repository.py", line 1064, in lookup_bzr_revision_id
    return self.revmap.get_branch_revnum(revid, layout, project)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/revids.py", line 290, in get_branch_revnum
    branch_path, min_revnum, max_revnum)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/revids.py", line 151, in bisect_fileprop_revid_revnum
    for propname, (oldpropvalue, propvalue) in revmeta.get_changed_fileprops().iteritems():
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/revmeta.py", line 224, in get_changed_fileprops
    self.get_fileprops(), self.get_previous_fileprops())
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/revmeta.py", line 217, in get_previous_fileprops
    return prev.get_fileprops()
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/svn/revmeta.py", line 187, in get_fileprops
    "no lhs parent revmeta found for %r" % lm
AssertionError: no lhs parent revmeta found for <bzrlib.plugins.svn.revmeta.CachingBzrMetaRevision object at 0x714aa70>

bzr 2.4b5 on python 2.7.1 (Linux-2.6.38-10-generic-x86_64-with-
    Ubuntu-11.04-natty)
arguments: ['/usr/bin/bzr', 'checkout',
    'svn://svn.twistedmatrix.com/svn/Twisted//branches/listopenfds-resource-
    fallback-5052-2', 'Twisted']
plugins: bash_completion[2.4b5], bzrtools[2.4.0], changelog_merge[2.4b5],
    launchpad[2.4b5], netrc_credential_store[2.4b5], news_merge[2.4b5],
    svn[1.1.0dev], weave_fmt[2.4b5]
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_US.UTF-8'

*** 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
    including this traceback and a description of the problem.
elapsedTime=3.532380
program finished with exit code 4

Whether it is the same bug but now manifesting with a new symptom or a new bug, I don't know.