22:28:43 + docker pull dockerbuildbot/docker-py:py2-ba9b8c760478a0fda37bcfa618b2ca46fdeeb9f1 22:28:43 Error response from daemon: manifest for dockerbuildbot/docker-py:py2-ba9b8c760478a0fda37bcfa618b2ca46fdeeb9f1 not found: manifest unknown: manifest unknown