Build failed. https://zuul.opendev.org/t/openstack/buildset/9444a0e9928b4c35a234f38e5cc0d8ee - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bab4d26b9dfa4cc19387fa4052c498cb : SUCCESS in 4m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/35a66206127d4625afc4714f7ae8c748 : FAILURE in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/566b5fc805864611b8a833852f3a1a41 : SUCCESS in 4m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2d476aed2e83492aba8352fb43267d84 : SUCCESS in 4m 34s