mvn 3.0.4 resolves dependencies differently than mvn 3.0.3 (was: webservices build passes where it shouldn't)

Got this very weird issues which i'm marking critical since it could hide a bunch of other issues.

This build https://jenkins.mw.lab.eng.bos.redhat.com/hudson/view/JBossTools/view/JBossTools_4.1.kepler/job/jbosstools-webservices_41/68/

using commit: 1c5f9a010b54c1c5999801ff11e3d654fa92ebf7

is passing on jenkins but it should not, it should fail with:

[ERROR] Failed to execute goal org.eclipse.tycho:tycho-packaging-plugin:0.18.0:package-plugin (default-package-plugin) on project org.jboss.tools.ws.wise.ui: Error assembling JAR: /Users/max/code/jbosstools/jbosstools-webservices/plugins/org.jboss.tools.ws.wise.ui/build.properties: bin.includes value(s) [lib/jaxb-impl-2.1.13.jar, lib/jaxb-xjc-2.1.13.jar] do not match any files. -> [Help 1]

Why is this not failing ? how come tycho/jenkins let it pass ?