Build failed. https://zuul.opendev.org/t/openstack/buildset/dde0b1d889ab4584aed391914aa8ffd6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/be06c94273944929804d2db684e33d06 : SUCCESS in 4m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1fa56848605a4f6d8201cf5a65f986b3 : FAILURE in 3m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d55efc29b4fd4799a168bacc17b89a38 : SUCCESS in 4m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a4ebf595b7f446e886eabb78c47bd36a : SUCCESS in 3m 58s