Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/338cb3385e6d40f297350b722dc84e7d : SUCCESS in 6m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a9daa08879d34e9b938c1a2de592be76 : SUCCESS in 6m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4ed520472aec4b2a96378ac3005a1b5b : SUCCESS in 8m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/973a77dfdac9450f9fa053cd14709b05 : FAILURE in 4m 47s