UnicodeEncodeError in trace.mutter called from dir_exporter during bzr builddeb

[Dilomo]

bzr crashes when I execute the command :

bzr builddeb --split

for the project: https://code.launchpad.net/~ubuntu-new-wave/anton/nw-config

I think it is caused by the Cyrillic chars in the path filename because if I move it to other latin dest it almost builds with the following error of the package not been able to be signed by gpg.

 Traceback (most recent call last):
   File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 842, in exception_to_return_code
     return the_callable(*args, **kwargs)
   File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 1037, in run_bzr
     ret = run(*run_argv)
   File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 654, in run_argv_aliases
     return self.run(**all_cmd_args)
   File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/builddeb/cmds.py", line 415, in run
     builder.export()
   File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/builddeb/builder.py", line 82, in export
     self.distiller.distill(self.target_dir)
   File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/builddeb/source_distiller.py", line 90, in distill
     self._distill(target)
   File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/builddeb/source_distiller.py", line 115, in _distill
     self.upstream_provider.provide(parent_dir)
   File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/builddeb/upstream.py", line 400, in provide
     self.version.upstream_version, self.store_dir)
   File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/builddeb/upstream.py", line 311, in get_specific_version
     return source.get_specific_version(package, version, target_dir)
   File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/builddeb/upstream.py", line 209, in get_specific_version
     export(self.tree, export_dir, format="dir")
   File "/usr/lib/python2.6/dist-packages/bzrlib/export/__init__.py", line 102, in export
     return _exporters[format](tree, dest, root, subdir, filtered=filtered)
   File "/usr/lib/python2.6/dist-packages/bzrlib/export/__init__.py", line 61, in _loader
     return func(tree, dest, root, subdir, filtered=filtered)
   File "/usr/lib/python2.6/dist-packages/bzrlib/export/dir_exporter.py", line 45, in dir_exporter
     mutter('export version %r', tree)
   File "/usr/lib/python2.6/dist-packages/bzrlib/trace.py", line 155, in mutter
     out = fmt % tuple(real_args)
 UnicodeEncodeError: 'ascii' codec can't encode characters in position 28-31: ordinal not in range(128)

[Martin Pool (mbp)]

mutter should probably be defensive and perhaps print a repr of its arguments if it can't actually encode/decode them.