Build failed. https://zuul.opendev.org/t/openstack/buildset/1fd6a3c656eb4d258388af3a03321f30 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6337129f8326423ea802b9aed8a83256 : SUCCESS in 3m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e6fcf4ac51e9410e9ef698bfc5ce1032 : FAILURE in 4m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6186c4aeee6c4d69855debcc4a1058d6 : SUCCESS in 4m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/169cd88df6f940f4a467038abb65234d : SUCCESS in 3m 56s