Message of type SE_BAD_FIELD appear as:

TEST: Unknown warning SE_BAD_FIELD in
it.tidalwave.metadata.exif.viewer.EXIFPaneSupport.focalConverter; core bug
patterns not found

An example is here:

http://www.tidalwave.it/hudson/job/blueMarine%20Metadata/463/findbugsResult/type.SE_BAD_FIELD/package.it.tidalwave.metadata.exif.viewer/source.9/#-1

This is the ant fragment used to generate the report:

<path id="findbugs.classpath">
<fileset dir="${findbugs.dir}">
<include name="lib/*.jar" />
<!-- include name="lib/findbugs-ant.jar" /-->
</fileset>
</path>

<taskdef name="findbugs"
classname="edu.umd.cs.findbugs.anttask.FindBugsTask"
classpathref="findbugs.classpath"/>

<target name="findbugs" depends="build">
<mkdir dir="build/test/findbugs"/>
<findbugs home="${findbugs.dir}"
output="xml"
outputFile="build/test/findbugs/findbugs.xml"
jvmargs="-Xmx512m"
effort="max"
reportLevel="low" >
<sourcePath path="${basedir}/src" />
<class location="${build.classes.dir}" />
</findbugs>
</target>