[INFO] Scanning for projects...
[WARNING] Some problems were encountered while building the effective model for org.wildfly.core:wildfly-elytron-integration:jar:12.0.0.Beta2-SNAPSHOT
[WARNING] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.wildfly.core:wildfly-controller-client:jar -> duplicate declaration
of version (?) @ org.wildfly.core:wildfly-elytron-integration:[unknown-version], /Users/jmesnil/Developer/wildfly-core/elytron/pom.xml, line 150, column 21
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.