Build failed. https://zuul.opendev.org/t/openstack/buildset/ca9a9531525044fabc6b9163dbbfdfb6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ae62d100b2054335b844c30d5aec0c87 : SUCCESS in 4m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/287006bb14b3434b80dee58f40a40c79 : SUCCESS in 5m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/572abb4ae08a413c9671eabe25c6cdd3 : FAILURE in 4m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/226a0176640e4d0aad10e36e1a114fc4 : FAILURE in 3m 52s