Build failed. https://zuul.opendev.org/t/openstack/buildset/3c58f36b575f435599ec33733a795839 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c3aae2700afd4620b1f517ac4041d1f2 : SUCCESS in 4m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bf5ed695c0dc4c4685983fd7574c54e9 : SUCCESS in 4m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ab68c5438dfb4c9ea00b1363b4ff3eae : SUCCESS in 4m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5a4a533083244cc09a12644e0224659e : FAILURE in 5m 02s