[ERROR] The project org.jboss.tools:tests.all:0.0.1-SNAPSHOT (/mnt/hudson_workspace/workspace/jbosstools-teiid-designer-7.1_stable_branch/sources/tests/pom.xml) has 2 errors
[ERROR] 'modules.module[5]' specifies duplicate child module org.teiid.designer.core.test @ line 20, column 11
[ERROR] 'modules.module[29]' specifies duplicate child module org.teiid.designer.vdb.test @ line 44, column 11

http://hudson.qa.jboss.com/hudson/job/jbosstools-teiid-designer-7.1_stable_branch/370/console

Not sure what's amiss here, but have a look at the poms mentioned above and see what's causing the duplicate.