Build failed. https://zuul.opendev.org/t/openstack/buildset/846a5c2601334f62b3cae641a181758f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0acb3698ad9f4d88abd529df5aa6f33d : SUCCESS in 3m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1c11ed25ff4743a1a6d53f9526e9f359 : SUCCESS in 2m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4d2f97ae8b1c46368bbb9f4a08599e4f : SUCCESS in 2m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/aea84999872145b7a5bc483813841b0c : FAILURE in 3m 02s