Build failed. https://zuul.opendev.org/t/openstack/buildset/21eac1c0e014474c95a6a7638e5ac35d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8ce9e7a35dd448c1ba557789108a7b2e : SUCCESS in 3m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f9c7f4630b0c4fcdb0269cbe3eafc6f0 : FAILURE in 3m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e72a3c7dd9d94427a7849e172b892f3f : SUCCESS in 2m 56s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c9788a7150844d83b639cd53147d13d0 : FAILURE in 2m 38s