21:40:20 + docker pull dockerbuildbot/docker-py:py2-e0a94aa5c7382859b91bf47f143e39f5f42552e6 21:40:20 Error response from daemon: manifest for dockerbuildbot/docker-py:py2-e0a94aa5c7382859b91bf47f143e39f5f42552e6 not found: manifest unknown: manifest unknown