@abc.abstractmethod
    def save(self, account):  # pragma: no cover
        raise NotImplementedError()
Failures in the supplied ``deferreds`` are all logged.
dataset/ETHPy150Open letsencrypt/letsencrypt/certbot/interfaces.py/AccountStorage.save--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/common/test/test_defer.py/GatherDeferredsTests.test_logging