[ https://issues.jboss.org/browse/JBIDE-16214?page=com.atlassian.jira.plugi... ] Mickael Istria commented on JBIDE-16214: ---------------------------------------- This kind of exception happens when multiple jars provide a class. Ideally, this should never happen. Can you please describe which component should I use (common I guess) and which mvn command you did run to get it. I'll check whether this is a scirpt issue of a jar issue. Do you use this jacoco jenkins plugin? In the jenkins.eng.mw.redhat.com instance, we don't use the plugin. Instead we rely on the script to create HTML reports and link them. Do you use Sonar for coverage as well? There are many ways to consume coverage report, and I don't think it's necessary to keep all of them (too much work, no added-value). Which one(s) do you actually use currently? I'll make efforts on those. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira