Build failed. https://zuul.opendev.org/t/openstack/buildset/a80d1c01a7dd4ffba5d94fa4118373b9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ffe2acc8f1b74f958e61a49607c2f76a : SUCCESS in 3m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4b7301a6ca354f6aaf3ef061891d6fcb : SUCCESS in 2m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4961d8d89ea74e3c8866ca7fd4ad26e9 : SUCCESS in 3m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/16513aafb22a48a5b875b016c42fc206 : FAILURE in 4m 26s