Build failed. https://zuul.opendev.org/t/openstack/buildset/47fa364c123c43ea86d5f95a4cdd26db - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0c72573adbb74195b033c123d4747492 : FAILURE in 3m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/649dbedf99994281b6196f8f14456a6f : SUCCESS in 3m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5d5df64bf2b648428fcb0339fc97533b : SUCCESS in 3m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d5ef7f71f9b5403abe8002775140ce19 : SUCCESS in 3m 49s