There is an issue when starting thorntail (PIM service) with guava version 30.0-jre:

Caused by: java.lang.IllegalStateException: Class extends type annotation appeared on a non class target
at org.jboss.jandex.Indexer.processTypeAnnotation(Indexer.java:538)
at org.jboss.jandex.Indexer.processTypeAnnotations(Indexer.java:515)
at org.jboss.jandex.Indexer.processAttributes(Indexer.java:355)
at org.jboss.jandex.Indexer.processMethodInfo(Indexer.java:306)
at org.jboss.jandex.Indexer.index(Indexer.java:1598)
at org.wildfly.swarm.Swarm.initializeConfigFiltersFatJar(Swarm.java:660)
at org.wildfly.swarm.Swarm.initializeConfigFilters(Swarm.java:644)
at org.wildfly.swarm.Swarm.initializeConfigView(Swarm.java:635)
... 11 more

Therefore, thorntail doesn't start and tests fail.

Updating to guava 30.1-jre solves the issue