Build failed. https://zuul.opendev.org/t/openstack/buildset/4aa8b6436e8147e088d78ebd3e55e2ad - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c5ccd7b1a3d94d70bdc0523bede87d0d : SUCCESS in 3m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/60aa71363915430c86e66be9e12ba441 : SUCCESS in 2m 58s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ebeaaa66950241a6948a65084057eec6 : SUCCESS in 3m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ae7a51cfca00463d907aed59d2dda041 : FAILURE in 3m 33s