When investigating an unrelated issue today, it was discovered that import_waterlines doesn't work due to a permission issue. Also, it's probably worth to stop ignoring problems with this cronjob as it runs only monthly so there is little potential for spam yet a serious chance that a problem will go unnoticed.
From https://phabricator.wikimedia.org/T159631#3078163, this job should
- Produce logging to see what happened in the past
- Report errors
- Have monitoring on the results to see that it has had an effect. In this case, the monitoring should be on the difference in age between the openstreetmapdata.com coastlines and what we have loaded.
The third should probably wait on T153282: [epic] Migrate to a new vector tile structure because we are currently not tracking the age of the static data in the database but the loading script I wrote does that for other purposes.