org.eclipse.sisu.plexus.tests/META-INF/plexus/bad_components_3.xml

<component-set>

  <components>
    <component>
      <implementation>
        org.eclipse.sisu.plexus.PlexusXmlScannerTest$DefaultBean
      </implementation>
      <requirements>
        <requirement>
          <role>
            no.such.class
          </role>
        </requirement>
      </requirements>
    </component>
  </components>

</component-set>