Build failed. https://zuul.opendev.org/t/openstack/buildset/0770a7732db14fbfb75f18fc6d020d8f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2bc893c6321b431c88a2d85a9f62b321 : SUCCESS in 4m 26s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9421711820fc4eb4ad91692359427270 : RETRY_LIMIT in 1m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7d338e730c804eae8beb19de097ca4ee : SUCCESS in 3m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3c9379c4d6484169af083866f0f77963 : SUCCESS in 3m 28s