Build failed. https://zuul.opendev.org/t/openstack/buildset/6028fd87ef8f45bf97160c2fb21669f5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/52cd4e41b2a74f1284bcf93c329b16cd : SUCCESS in 3m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fc25a6a61a0843b7be0ccdecbece6908 : FAILURE in 2m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fe37e9f559484689ac3544d2de54f4ad : SUCCESS in 2m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/846f838ebadc4993a32b61884ff91820 : FAILURE in 2m 36s