Build failed. https://zuul.opendev.org/t/openstack/buildset/231294a2e32b49ed91294337c5bde543 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1fc115fdaa8245288f4407a916fd4b41 : SUCCESS in 5m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2aa6bb6b03884efeb8134411b4dccee4 : FAILURE in 2m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b8c073263243456584e3623e8c5d518a : SUCCESS in 2m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/64beab6217cf413c88d36f3d90c12c92 : FAILURE in 3m 06s