Docker push failures

[slimslenderslacks]

I have seen two cases where the push is not successful but the goal still completes successfully. Here's one (blob upload unknown)

b3c5147f2ed1: Layer already exists
--
11/24/2018 02:24:02.436 | 41f50d293d3a: Layer already exists
11/24/2018 02:24:02.645 | 5251addbe073: Layer already exists
11/24/2018 02:24:02.866 | d5ce7f246067: Layer already exists
11/24/2018 02:24:03.088 | f1b91f8d903c: Layer already exists
11/24/2018 02:24:03.275 | 6adc2bf29e0f: Pushed
11/24/2018 02:24:07.285 | f82e03a2add6: Pushed
11/24/2018 02:24:16.538 | 8884dcc2b6ca: Pushed
11/24/2018 02:24:39.777 | 5e053cb239b1: Pushed
11/24/2018 02:24:40.358 | blob upload unknown
11/24/2018 02:24:40.543 | /--
11/24/2018 02:24:40.543 | Invoking after project listener: npm install

and this one has an error parsing below

ada50b9a12a2: Layer already exists
--
11/24/2018 01:46:15.538 | 48445ea453ab: Layer already exists
11/24/2018 01:46:15.654 | b3c5147f2ed1: Layer already exists
11/24/2018 01:46:15.707 | 41f50d293d3a: Layer already exists
11/24/2018 01:46:15.831 | d5ce7f246067: Layer already exists
11/24/2018 01:46:15.833 | 5251addbe073: Layer already exists
11/24/2018 01:46:15.889 | f1b91f8d903c: Layer already exists
11/24/2018 01:46:16.533 | e5fba150d040: Pushed
11/24/2018 01:46:16.592 | 06bb5cc1493f: Pushed
11/24/2018 01:46:16.597 | error parsing HTTP 404 response body: invalid character 'p' after top-level value: "404 page not found\n"
11/24/2018 01:46:16.707 | /--
11/24/2018 01:46:16.707 | Invoking after project listener: npm install
11/24/2018 01:46:16.710 | Result: Success

We think this may have been an issue with docker hub itself but should the failure handler for the docker push goal have noticed this?