Build failed. https://zuul.opendev.org/t/openstack/buildset/b58c508dd72f48698be62dae0622fa6f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4d02b699f0414e3d95cbd16b883d5df6 : FAILURE in 6m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c31383940db5461eb39a7c170a404904 : SUCCESS in 5m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ec5eab73fbf642ec96af821a301e001d : SUCCESS in 6m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9bb1fdd2a164407ba2d42bef3f8b9c45 : SUCCESS in 6m 33s