def cleanup_error(self, exception):
        self.errors.append(exception.get_msg())
Takes a string such as ``2009-07-23`` and returns a datetime object with
dataset/ETHPy150Open pydoit/doit/doit/reporter.py/JsonReporter.cleanup_error--crossover with--dataset/ETHPy150Open diefenbach/django-lfs/lfs/core/utils.py/get_end_day