boar ci (output)

$ boar ci
Looking for files: 304
Verifying checksum cache: 304
Loading session... done
Calculating changes... done
Traceback (most recent call last):
  File "/usr/local/bin/boar", line 1497, in <module>
    return_code = main()
  File "/usr/local/bin/boar", line 1415, in main
    return cmd_ci(args[1:])
  File "/usr/local/bin/boar", line 744, in cmd_ci
    include=included_files)
  File "/opt/boar/workdir.py", line 317, in checkin
    self.get_changes(self.revision, ignore_errors = ignore_errors)
  File "/opt/boar/workdir.py", line 690, in get_changes
    new_files.add(new_name)
AttributeError: 'tuple' object has no attribute 'add'