Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.serialization/stable/pike/build-openstack-sphinx-docs/9f0f9df/ : RETRY_LIMIT in 3m 51s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.serialization/stable/pike/openstack-tox-py27/d0a4a37/ : SUCCESS in 4m 27s