Build failed. https://zuul.opendev.org/t/openstack/buildset/caa4384e929a49b39b586a642584fe1a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d933aeefec77460498351010ba8443c3 : SUCCESS in 2m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ab6fa9264ed3474aad74c6d710679fb5 : FAILURE in 2m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1f139783fe1944e0bf1e95989fc0a895 : SUCCESS in 2m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6894a0a190974cdfb099053f861d99b1 : FAILURE in 2m 51s