Build failed. https://zuul.opendev.org/t/openstack/buildset/7c8a7e6d1f924c5989e13f3795d52a43 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7e993f3a82e745ca9b1750756cae23a6 : SUCCESS in 3m 22s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9b8c927bf05f42c0994794493f8a98da : SUCCESS in 5m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/df750fda11114a35bd16bef9e2b8378e : FAILURE in 3m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/28291f4ad696475d98c4552ab8df3376 : FAILURE in 3m 33s