If you build one of our 'build' or 'dist' modules more than once without a clean, the installation will have a '.galleon/history' folder. That should not exist in one of our 'official' dists as those are meant to represent a first provisioning.
If/when we move to using wildfly-maven-plugin to build these we can use
<overwrite-provisioned-server>true</overwrite-provisioned-server>
But for now we can force execution of the 'clean' plugin, and add verification checks that this dir does not exist.