Build failed. https://zuul.opendev.org/t/openstack/buildset/667abe722b4349bc8ee47df0b26679c7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ceef118c05224f52b67a5fbfd32a3fbc : SUCCESS in 3m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/37840f42acbc45c19536128ca9b94181 : SUCCESS in 4m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/356ff70d60d646df9002f530b66ce21e : SUCCESS in 4m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d17d752b452a44c2b16bb24d6fd10b2e : FAILURE in 3m 47s