Checkstyle crashes when I run it with Maven 3.0.4, but works with Maven 2.2.1.
I'm afraid I don't know enough about Maven to create a smaller test case than this: 1. Set JAVA_HOME to a 1.6 JDK 2. Clone http://github.com/nasa/mct 3. Follow the steps in README.md, using Maven 3 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle (published-api-checks) on project mct-platform: Execution published-api-checks of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle failed. NullPointerException -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle (published-api-checks) on project mct-platform: Execution published-api-checks of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle failed. at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution published-api-checks of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.4:checkstyle failed. at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) ... 19 more Caused by: java.lang.NullPointerException at org.apache.maven.plugin.checkstyle.rss.DefaultCheckstyleRssGenerator.generateRSS(DefaultCheckstyleRssGenerator.java:72) at org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:639) at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:131) at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:76) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) ... 20 more Adam
