Build failed. https://zuul.opendev.org/t/openstack/buildset/476031c5c467413f833d263335ec9dd2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2ac1fa671819440c9f8dd83177ec4b5d : SUCCESS in 4m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fa05c1c5bc35463ba8437e925d724615 : SUCCESS in 4m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7c386c9e66cd436db8127d68aa1945cd : SUCCESS in 5m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0845fe9ab0ad45888af924a02dabfde7 : FAILURE in 5m 26s