Traceback (most recent call last):
  File "/usr/bin/bzr-fast-export", line 379, in <module>
    exporter = BzrFastExporter(options)
  File "/usr/bin/bzr-fast-export", line 71, in __init__
    self.branch = bzrlib.branch.Branch.open_containing(options.repo)[0]
  File "/usr/lib/python2.6/dist-packages/bzrlib/branch.py", line 145, in open_containing
    possible_transports)
  File "/usr/lib/python2.6/dist-packages/bzrlib/bzrdir.py", line 852, in open_containing
    return BzrDir.open_containing_from_transport(transport)
  File "/usr/lib/python2.6/dist-packages/bzrlib/bzrdir.py", line 884, in open_containing_from_transport
    raise errors.NotBranchError(path=url)
NotBranchError: Not a branch: "/home/username/Projects/mixxx/lp:mixxx/1.7/".