Build failed. https://zuul.opendev.org/t/openstack/buildset/90c47e2a7f1847d891e328925980bbdf - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/43e2308668a74b50a5e161ed58977fed : SUCCESS in 3m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/667a386f5d2b47819ef1654cc8b16475 : SUCCESS in 2m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3daa192e9b8943939948f08e5a80b4ae : SUCCESS in 2m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8fcd036bf7f546bea2018d0e0ecc96f1 : FAILURE in 2m 29s