Tags code as at 2008-07-05 09:29:00+01:00 breaks on Waf repository

[Russel Winder]

Using bzr-svn from http://people.samba.org/bzr/jelmer/bzr-svn/0.4/ updated at the time above and then made leads to the following when accessing the Waf repository. There were no problems until the recent tags code was added.

|> bzr pull
Using saved location: svn+http://waf.googlecode.com/svn/trunk
using experimental bzr-svn mappings; output may change between revisions
bzr: ERROR: exceptions.KeyError: 'tags/waf-1.3.2'

Traceback (most recent call last):
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 857, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 797, in run_bzr
    ret = run(*run_argv)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 499, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/builtins.py", line 665, in run
    possible_transports=possible_transports)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/workingtree.py", line 1521, in pull
    possible_transports=possible_transports)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/branch.py", line 1853, in pull
    _override_hook_target=_override_hook_target)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/branch.py", line 1655, in pull
    result.tag_conflicts = source.tags.merge_to(self.tags, overwrite)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/tag.py", line 207, in merge_to
    source_dict = self.get_tag_dict()
  File "/home/users/russel/.bazaar/plugins/svn/branch.py", line 100, in get_tag_dict
    layout=self.layout)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/decorators.py", line 138, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/home/users/russel/.bazaar/plugins/svn/repository.py", line 742, in find_tags
    del paths[bp]
KeyError: 'tags/waf-1.3.2'

bzr 1.6b3 on python 2.5.2 (linux2)
arguments: ['/home/users/russel/bin/bzr', 'pull']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_GB.UTF-8'
plugins:
  builddeb /usr/lib/python2.5/site-packages/bzrlib/plugins/builddeb [0.92.0dev0]
  bzrtools /home/users/russel/.bazaar/plugins/bzrtools [1.6.0]
  dbus /usr/lib/python2.5/site-packages/bzrlib/plugins/dbus [unknown]
  email /usr/lib/python2.5/site-packages/bzrlib/plugins/email [unknown]
  gtk /home/users/russel/.bazaar/plugins/gtk [0.95.0dev1]
  launchpad /home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/plugins/launchpad [unknown]
  pqm /usr/lib/python2.5/site-packages/bzrlib/plugins/pqm [1.0.0dev0]
  rebase /home/users/russel/.bazaar/plugins/rebase [0.4.0dev0]
  svn /home/users/russel/.bazaar/plugins/svn [0.4.11exp0]
  xmloutput /home/users/russel/.bazaar/plugins/xmloutput [0.4.4]
*** 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.
|>