Build failed. https://zuul.opendev.org/t/openstack/buildset/bc9e044fb39643cf9ffa32240a7cb7af - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7ac0a29046254c048b3b543b96b0994e : FAILURE in 2m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e97da6714f3f408f9685848de231dedb : SUCCESS in 2m 55s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/985a0046db4a49fbac27bf9b0ea43789 : SUCCESS in 2m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9475ebdad7614a60abc095b78eefdd11 : SUCCESS in 3m 21s