def _getFailure(self, error):
        if isinstance(error, tuple):
            return Failure(error[1], error[0], error[2])
        return error
Parse the upload info from file upload field_storage.
dataset/ETHPy150Open twisted/twisted/twisted/trial/reporter.py/TestResult._getFailure--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/blobstore/blobstore.py/_parse_upload_info