Build failed. https://zuul.opendev.org/t/openstack/buildset/cd51a6af266e48dfb06df80c3ed0dfc7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8e0fed7bb88a4ee6b5a96fa4b3ffb255 : SUCCESS in 3m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6a9e641fdd9b4f608b235cef812e7619 : FAILURE in 3m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/354bce17ff084015a6818177c64bb742 : SUCCESS in 3m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/16567b9fec69457496aba612f78f5070 : FAILURE in 3m 24s