test_vip failed with RetryError on MarathonApp.wait

self = <retrying.Retrying object at 0x7f533113d278>
fn = <function MarathonApp.wait at 0x7f53320a2048>
args = (<test_networking.MarathonApp object at 0x7f53310ff4a8>, <dcos_test_utils.enterprise.EnterpriseApiSession object at 0x7f5332196da0>)
kwargs = {}, start_time = 1510670454766, attempt_number = 240
attempt = Attempts: 240, Value: False, delay_since_first_attempt_ms = 1200912
sleep = 5000

    def call(self, fn, *args, **kwargs):
        start_time = int(round(time.time() * 1000))
        attempt_number = 1
        while True:
            try:
                attempt = Attempt(fn(*args, **kwargs), attempt_number, False)
            except:
                tb = sys.exc_info()
                attempt = Attempt(tb, attempt_number, True)
    
            if not self.should_reject(attempt):
                return attempt.get(self._wrap_exception)
    
            delay_since_first_attempt_ms = int(round(time.time() * 1000)) - start_time
            if self.stop(attempt_number, delay_since_first_attempt_ms):
                if not self._wrap_exception and attempt.has_exception:
                    # get() on an attempt with an exception should cause it to be raised, but raise just in case
                    raise attempt.get()
                else:
>                   raise RetryError(attempt)
E                   retrying.RetryError: RetryError[Attempts: 240, Value: False]