Build failed. https://zuul.opendev.org/t/openstack/buildset/bd181569abe949f5bbd8862bcb5115f7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8fa41496f2bb44728e8b3a12571c6e8d : SUCCESS in 3m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/90b5554b38d745f4b02473160a8d5dca : FAILURE in 3m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/787bac3fdcd24c02962cc24c325ea493 : SUCCESS in 3m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3f8c5c755cd24861b7d375aeb803947b : SUCCESS in 4m 08s