Build failed. https://zuul.opendev.org/t/openstack/buildset/b4eb6d7d7cc746d2920239c729e14e2a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/63c62ec19e3f4b5da81775045a32ec18 : SUCCESS in 4m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b6bb1645f05b42b2a2fd3a161f0a9060 : SUCCESS in 4m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1e7ce85d013b4fa7873d81db9551df8e : FAILURE in 4m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/63c96043cb504401ad754247a1ed531b : FAILURE in 4m 16s