Build failed. https://zuul.opendev.org/t/openstack/buildset/2853fac3221e4a94b3fb331acbd6a1a1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ca2079c7e51e44758004b08c7b2fa2e4 : FAILURE in 4m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4994505abab24c928f588688f606887d : FAILURE in 4m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7a190bff30cb4beb80f6107293a955e7 : FAILURE in 4m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f6325794abeb4b5aaab6a4a355cf0e85 : FAILURE in 4m 02s