Featured posts list broken

When marking blog/2019-02-19-reliable-microservices-data-exchange-with-the-outbox-pattern.adoc with the "featured" tag, the featured list code breaks for some unknown reason; I reckon the post lacks on of the attributes used for sorting.

https://travis-ci.org/github/debezium/debezium.github.io/builds/710416619

Also note that this build didn't fail as per its status on Travis, althought the actual awestruct command failed.