cirrus_build_completion_indices.sh should not ignore failures of the underlying script extensions/CirrusSearch/maintenance/UpdateSuggesterIndex.php.
Prior to adding | ts '{}' it was failing with a 123 status probably because of wikidata: Completion suggester disabled, quitting... for wikidata.
Since we expect this error UpdateSuggesterIndex could perhaps return a success in this case.
To sum-up this task is:
- make sure cirrus_build_completion_indices.sh in puppet reports a failure when UpdateSuggesterIndex.php fails
- make sure that UpdateSuggesterIndex.php does not return with an error when quitting with this message: Completion suggester disabled, quitting...