New logging infrastructure and L14 reporting change

Change effective on 08 April 2020

Beginning today, April 7, 2020 and continuing over the next several weeks we will be rolling out a new application logging infrastructure. The change will occur automatically for all of your apps (in both the Common Runtime as well as Private Spaces) and there is nothing for you to do for this change to take effect.

The new logging infrastructure operates the same, as described here. Going forward, L14 errors are only reported via the heroku logs command.