Build failed. https://zuul.opendev.org/t/openstack/buildset/e07cb738811345cda6944fc11a5d0ea6 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/efbb0b0974714dba8a17f844066a845d : SUCCESS in 3m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d130e6dd71fa4f4bba48b231ba994b4f : FAILURE in 2m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9c080dcd3676492293399a3bfc09e2f0 : SUCCESS in 3m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5c6bbb1df7a24780bb9a2989445427be : SUCCESS in 3m 11s