Build failed. https://zuul.opendev.org/t/openstack/buildset/a02f872ff97d42cfa3f2d401a972d773 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9768707b594243008178a43514341dbd : SUCCESS in 4m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a0e7d2383416430599e5f9e7c5c5e6a3 : SUCCESS in 10m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cd9d60e2414d4118821c75468aab4130 : FAILURE in 11m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/12441a7d06f541269645c7c122d54e57 : SUCCESS in 10m 33s