Build failed. https://zuul.opendev.org/t/openstack/buildset/2d65ad9c67524032b0de5b405a801c7e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a9cc1663c2d4477e9599bc83520a7d2d : SUCCESS in 3m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/34909c58ff774288aa7d11a5dc71bb02 : FAILURE in 3m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/604a76fdf1c34b6293e9062510b3b6a9 : SUCCESS in 2m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/28e2fbf8daf9476eb8fe087269ac7c4c : FAILURE in 3m 56s