Closure<String> possiblyFailingTransform = { index ->
            index == failingTransform ? "FailingDuplicator" : "Duplicator"
        }
        buildFile << declareAttributes() << withJarTasks() << withFileLibDependency("lib3.jar") << withExternalLibDependency("lib4-1.0.jar") << duplicatorTransform() << """
            abstract class FailingDuplicator extends Duplicator {

                @Override