Build failed. https://zuul.opendev.org/t/openstack/buildset/0fe6baccfd0441379a9d3981b3a31ab8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b503716c1f8c4ae5a0842392bda0f260 : FAILURE in 6m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a2ba6a1dc1f14508a6389693b6733e1e : SUCCESS in 3m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e204ff12b6d24dca95724a088fb2de55 : SUCCESS in 4m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c52d905f304044e1bd949f193208975a : SUCCESS in 3m 20s