Comment 6 for bug 365615

Running 'bzr pack' returns:

bzr: ERROR: zlib.error: Error -3 while decompressing: incorrect data check

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 831, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 1026, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 643, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 4164, in run
    repository.pack()
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/repofmt/pack_repo.py", line 2357, in pack
    self._pack_collection.pack()
  File "/usr/lib/python2.5/site-packages/bzrlib/repofmt/pack_repo.py", line 1580, in pack
    self._execute_pack_operations(pack_operations, OptimisingPacker)
  File "/usr/lib/python2.5/site-packages/bzrlib/repofmt/groupcompress_repo.py", line 584, in _execute_pack_operations
    packer.pack()
  File "/usr/lib/python2.5/site-packages/bzrlib/repofmt/pack_repo.py", line 754, in pack
    return self._create_pack_from_packs()
  File "/usr/lib/python2.5/site-packages/bzrlib/repofmt/groupcompress_repo.py", line 459, in _create_pack_from_packs
    self._copy_text_texts()
  File "/usr/lib/python2.5/site-packages/bzrlib/repofmt/groupcompress_repo.py", line 442, in _copy_text_texts
    'text', self._get_progress_stream, 4)
  File "/usr/lib/python2.5/site-packages/bzrlib/repofmt/groupcompress_repo.py", line 394, in _copy_stream
    reuse_blocks=False):
  File "/usr/lib/python2.5/site-packages/bzrlib/groupcompress.py", line 1451, in _insert_record_stream
    bytes = record.get_bytes_as('fulltext')
  File "/usr/lib/python2.5/site-packages/bzrlib/groupcompress.py", line 419, in get_bytes_as
    self._manager._prepare_for_extract()
  File "/usr/lib/python2.5/site-packages/bzrlib/groupcompress.py", line 512, in _prepare_for_extract
    self._block._ensure_content(self._last_byte)
  File "/usr/lib/python2.5/site-packages/bzrlib/groupcompress.py", line 196, in _ensure_content
    remaining_decomp, needed_bytes + _ZLIB_DECOMP_WINDOW)
error: Error -3 while decompressing: incorrect data check