Build failed. https://zuul.opendev.org/t/openstack/buildset/ec9ed170701e484aa1cedd6b45bc3f23 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c8f3b29c2f804416878e5b7c20a5adf9 : SUCCESS in 4m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a0bbbce3acd142ad8a4b32589b4ecb9d : FAILURE in 2m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/13ff8eaacfc642ab87ade58cc5947dad : SUCCESS in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/df4fe533bb68428582b1ce1a1ca7444c : SUCCESS in 3m 50s