Build failed. https://zuul.opendev.org/t/openstack/buildset/5121641655694a128ee50c9b3c2dedf4 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e6af0bb11b7d4ad2b8391ddde9ffb63e : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4733bdde186349fbab1970af7d67d968 : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/25bb26c4dcf54a94843ddac7a1689fcc : SUCCESS in 3m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/aa511aa70c4247d5bcb3a66344d3cdc7 : SUCCESS in 3m 46s