}

            public void afterExecutionFailure(MojoExecutionEvent event) {
                assertNotNull(event.getSession());
                assertNotNull(event.getProject());
                assertNotNull(event.getExecution());
                assertNotNull(event.getMojo());
                assertNotNull(event.getCause());

                log.add("afterExecutionFailure " + event.getProject().getArtifactId() + ":"