Build failed. https://zuul.opendev.org/t/openstack/buildset/a65eaad0682f477da99e0a6e03bf5830 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bb068fc82811418a9a2287e053e1f3a8 : SUCCESS in 4m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3810bf4d1a23444f94ddad99642bc9e0 : SUCCESS in 4m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/03dcb23b1c604a1088eb7c4382242a8d : SUCCESS in 4m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/79c74411e25e43ac862c63ed85240002 : FAILURE in 3m 46s