22:47:34 + docker pull dockerbuildbot/docker-py:py2-38301d9e7693c248be2126b75d7766f11e371724 22:47:34 Error response from daemon: manifest for dockerbuildbot/docker-py:py2-38301d9e7693c248be2126b75d7766f11e371724 not found: manifest unknown: manifest unknown