I have a number of tests failing in the following JUnit Task.

 <target name="test-main" depends="build.modules" description="Main Integration/Unit tests">
        <junit fork="yes"
               description="Main  Integration/Unit Tests"
               showoutput="true"
               printsummary="true"
               outputtoformatters="true">
            <classpath refid="test-main.runtime.classpath"/>
            <batchtest filtertrace="false" todir="${basedir}">
                <fileset dir="${basedir}" includes="**/*Test.class" excludes="**/*MapSimulationTest.class"/>
            </batchtest>
        </junit>
    </target>

How do I tell Junit to ouput the errors for each test so that I can look at the stack trace and debug the issues.