Build failed. https://zuul.opendev.org/t/openstack/buildset/3eb6a36abdea4beabb842e658a1553ca - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c65766c3998941d6afcbf6f10c240a59 : SUCCESS in 4m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/931a8c70e8c946799a266ea1d681185a : RETRY_LIMIT in 1m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7d31d760ced749b180356e2769bc1c64 : SUCCESS in 2m 46s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9502c444bbfc45079fd3d7d58193a727 : SUCCESS in 3m 14s