Here's a snippet from the .bzr.log from around the time this re-occurred: 0.124 opening working tree '/var/lib/buildbot/twisted/ubuntu-py2.6-wx/Twisted' 13.540 Packing repository GCRepositoryPackCollection(CHKInventoryRepository('file:///var/lib/buildbot/twisted/.bzr/repository/')), which has 14 pack files, containing 15858 revisions with hint ['12b63ed2bf595ccb466b1d7cb1a5bcc0']. 13.540 repacking 3 revisions [ 2143] 2011-01-16 18:30:56.685 INFO: +N twisted/mail/topfiles/4740.feature [ 2143] 2011-01-16 18:30:56.686 INFO: M twisted/mail/tap.py [ 2143] 2011-01-16 18:30:56.686 INFO: M twisted/mail/test/test_options.py [ 2143] 2011-01-16 18:30:56.826 INFO: All changes applied successfully. [ 2143] 2011-01-16 18:30:56.967 INFO: Updated to revision 15716 of branch svn://svn.twistedmatrix.com/svn/Twisted/trunk 86.408 return code 0 Sun 2011-01-16 18:30:57 -0500 0.035 bazaar version: 2.2.2 0.035 bzr arguments: [u'version-info'] 0.040 looking for plugins in /var/lib/buildbot/.bazaar/plugins 0.040 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins 0.080 encoding stdout as osutils.get_user_encoding() 'UTF-8' 0.122 opening working tree '/var/lib/buildbot/twisted/lucid32-pypy/build' 0.123 encoding stdout as osutils.get_user_encoding() 'UTF-8' 1.185 bzr-svn: using Subversion 1.6.6 () 16.194 Traceback (most recent call last): File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 912, in exception_to_return_code return the_callable(*args, **kwargs) File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 1112, in run_bzr ret = run(*run_argv) File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 690, in run_argv_aliases return self.run(**all_cmd_args) File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 705, in run return self._operation.run_simple(*args, **kwargs) File "/usr/lib/python2.6/dist-packages/bzrlib/cleanup.py", line 135, in run_simple self.cleanups, self.func, *args, **kwargs) File "/usr/lib/python2.6/dist-packages/bzrlib/cleanup.py", line 165, in _do_with_cleanups result = func(*args, **kwargs) File "/usr/lib/python2.6/dist-packages/bzrlib/builtins.py", line 1342, in run accelerator_tree, hardlink) File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/branch.py", line 376, in create_checkout hardlink=hardlink) File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/branch.py", line 321, in _create_heavyweight_checkout checkout_branch.pull(self, stop_revision=revision_id) File "/usr/lib/python2.6/dist-packages/bzrlib/branch.py", line 1068, in pull possible_transports=possible_transports, *args, **kwargs) File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/branch.py", line 817, in pull stop_revision, overwrite, limit=limit) File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/branch.py", line 749, in _update_revisions project=self.source.project, mapping=self.source.mapping) File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/svn/fetch.py", line 1528, in fetch self.target.pack(hint=pack_hint) File "/usr/lib/python2.6/dist-packages/bzrlib/decorators.py", line 194, in write_locked result = unbound(self, *args, **kwargs) File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 2399, in pack self._pack_collection.pack(hint=hint, clean_obsolete_packs=clean_obsolete_packs) File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 1585, in pack self._execute_pack_operations(pack_operations, OptimisingPacker) File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 690, in _execute_pack_operations result = packer.pack() File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 746, in pack return self._create_pack_from_packs() File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 472, in _create_pack_from_packs self._copy_revision_texts() File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 410, in _copy_revision_texts 'revisions', self._get_progress_stream, 1) File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 399, in _copy_stream reuse_blocks=False): File "/usr/lib/python2.6/dist-packages/bzrlib/groupcompress.py", line 1653, in _insert_record_stream for record in stream: File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 207, in pb_stream for idx, record in enumerate(substream): File "/usr/lib/python2.6/dist-packages/bzrlib/groupcompress.py", line 1413, in get_record_stream orig_keys, ordering, include_delta_closure): File "/usr/lib/python2.6/dist-packages/bzrlib/groupcompress.py", line 1572, in _get_remaining_record_stream for factory in batcher.yield_factories(full_flush=True): File "/usr/lib/python2.6/dist-packages/bzrlib/groupcompress.py", line 1130, in yield_factories block_read_memo, block = blocks.next() File "/usr/lib/python2.6/dist-packages/bzrlib/groupcompress.py", line 1369, in _get_blocks zdata = raw_records.next() File "/usr/lib/python2.6/dist-packages/bzrlib/knit.py", line 3371, in get_raw_records reader = pack.make_readv_reader(transport, path, offsets) File "/usr/lib/python2.6/dist-packages/bzrlib/pack.py", line 221, in make_readv_reader transport.readv(filename, readv_blocks))) File "/usr/lib/python2.6/dist-packages/bzrlib/transport/__init__.py", line 659, in readv return self._readv(relpath, offsets) File "/usr/lib/python2.6/dist-packages/bzrlib/transport/__init__.py", line 671, in _readv fp = self.get(relpath) File "/usr/lib/python2.6/dist-packages/bzrlib/transport/local.py", line 167, in get self._translate_error(e, path) File "/usr/lib/python2.6/dist-packages/bzrlib/transport/__init__.py", line 306, in _translate_error raise errors.NoSuchFile(path, extra=e) NoSuchFile: No such file: u'/var/lib/buildbot/twisted/.bzr/repository/packs/12b63ed2bf595ccb466b1d7cb1a5bcc0.pack': [Errno 2] No such file or directory: u'/var/lib/buildbot/twisted/.bzr/repository/packs/12b63ed2bf595ccb466b1d7cb1a5bcc0.pack'