Postgresql fails to start on focal

Postgres 12 had been running on focal for the past several weeks without issue. Something changed after July 17, 2020. Postgres 12 is now failing to start

0.90s$ travis_setup_postgresql 12
Starting PostgreSQL v12
Job for postgresql@12-main.service failed because the service did not take the steps required by its unit configuration.
See "systemctl status postgresql@12-main.service" and "journalctl -xe" for details.
sudo systemctl start postgresql@12-main

Jobs that passed last week are failing this week because postgres does not start. Did something change with the postgresql 12 configuration?

Postgres 12 is working this morning on focal. No changes made to the setup.