capybara/virtualenv/lib/python2.7/site-packages/setuptools/sandbox.py
def dump(cls, type, exc):
        """
        Always return a dumped (pickled) type and exc. If exc can't be pickled,
        wrap it in UnpickleableException first.
        """
        try:
            return pickle.dumps(type), pickle.dumps(exc)
        except Exception:
            return cls.dump(cls, cls(repr(exc)))
def dump(cls, type, exc):
        """
        Always return a dumped (pickled) type and exc. If exc can't be pickled,
        wrap it in UnpickleableException first.
        """
        try:
            return pickle.dumps(type), pickle.dumps(exc)
        except Exception:
            return cls.dump(cls, cls(repr(exc)))
def dump ( cls , type , exc ) : try : return pickle . dumps ( type ) , pickle . dumps ( exc ) except Exception : return cls . dump ( cls , cls ( repr ( exc ) ) )
Always return a dumped (pickled) type and exc. If exc can't be pickled,
        wrap it in UnpickleableException first.
Always return a dumped ( pickled ) type and exc . If exc can t be pickled wrap it in UnpickleableException first .