Build failed. https://zuul.opendev.org/t/openstack/buildset/ca67edca34a347b881efa2a9b72ee088 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7d1b7f7547ab415cbe1721a508d13acd : SUCCESS in 4m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c41872e3de144b07b673e6b8a0ec9315 : SUCCESS in 4m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1be07d0b3bd34d3196ce9671accdf3c7 : SUCCESS in 4m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bf8d05d41252409a8b554a5e8acdeab9 : FAILURE in 3m 47s