anchor.diff:        <dependency>
            <groupId>org.eclipse.jdt.core.compiler</groupId>
            <artifactId>ecj</artifactId>
  -         <version>${eclipse.jdt.core.compiler.ecj.version}</version>
  +         <version>4.6.1</version>
         </dependency>
      </dependencies>
   </plugin>
  
positive.code: So the only way I found right now is to add a Log handler who tell the Mojo if jspc raise a SEVERE error in his log (this is a little be tricky...).
  If we take multiple threads, this parameter works only if it's "false".
  If it's true, each thread with stop at first error.
  See pull request TODO to add this feature.
  
  == Comparing to other Maven plugins
  
  During this case I search other Maven plugins who compile JSP with Tomcat. It's not easy beacause JSP it's very fashionable...
  I found this major ones : 
  
  * https://github.com/leonardehrenfried/jspc-maven-plugin
  
negative.code:       <dependency>
           <groupId>org.apache.tomcat</groupId>
           <artifactId>tomcat-jasper</artifactId>
           <version>8.5.4</version>
           <exclusions>
              <exclusion>
                 <groupId>org.eclipse.jdt.core.compiler</groupId>
  