def run_sequential(self):
        list(self.pull())
Fail the test if C{first} is C{second}.  This is an
dataset/ETHPy150Open beetbox/beets/beets/util/pipeline.py/Pipeline.run_sequential--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/trial/unittest.py/_Assertions.failIfIdentical