Comment 6 for bug 1316858

Ok, StreamTagger is being constructed with bad data by the make tests lambda:

        super(StreamTagger, self).__init__(targets)
        self.add = frozenset(add or ())
        self.discard = frozenset(discard or ())
        print self.add

frozenset(['worker-3'])
frozenset(['worker-3'])
frozenset(['worker-3'])
frozenset(['worker-3'])