Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.serialization/stable/ocata/build-openstack-sphinx-docs/a1e9182/html/ : SUCCESS in 5m 59s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.serialization/stable/ocata/openstack-tox-py27/84d151f/ : RETRY_LIMIT in 2m 33s