Build failed. https://zuul.opendev.org/t/openstack/buildset/b2ead01dd8394261a316fa545eb6586d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/164e0195a1c9428e943e2de8c4c81ecc : SUCCESS in 6m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c2f92ea9682f405e9b51219f71132494 : SUCCESS in 5m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a56d9927148d4dbeaeb3f64f7a17d82d : SUCCESS in 6m 23s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b7a8f30890164653956c586a60286860 : FAILURE in 7m 58s