NullPointerException in build during checkstyle ----------------------------------------------- Key: WFLY-9601 URL: https://issues.jboss.org/browse/WFLY-9601 Project: WildFly Issue Type: Bug Components: Build System Environment: Customized :P Reporter: Tomaz Cerar Assignee: Tomaz Cerar Priority: Critical {code} [ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:checkstyle (check-style) on project wildfly-naming: Execution check-style of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:checkstyle failed. NullPointerException -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:checkstyle (check-style) on project wildfly-naming: Execution check-style of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:checkstyle failed. at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212) 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:116) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.maven.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:39) at org.apache.maven.wrapper.WrapperExecutor.execute(WrapperExecutor.java:122) at org.apache.maven.wrapper.MavenWrapperMain.main(MavenWrapperMain.java:50) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution check-style of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:checkstyle failed. at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207) ... 27 more Caused by: java.lang.NullPointerException at com.puppycrawl.tools.checkstyle.checks.SuppressWarningsHolder.isSuppressed(SuppressWarningsHolder.java:200) at com.puppycrawl.tools.checkstyle.filters.SuppressWarningsFilter.accept(SuppressWarningsFilter.java:38) at com.puppycrawl.tools.checkstyle.api.FilterSet.accept(FilterSet.java:88) at com.puppycrawl.tools.checkstyle.Checker.fireErrors(Checker.java:358) at com.puppycrawl.tools.checkstyle.Checker.process(Checker.java:276) at org.apache.maven.plugin.checkstyle.exec.DefaultCheckstyleExecutor.executeCheckstyle(DefaultCheckstyleExecutor.java:252) at org.apache.maven.plugin.checkstyle.AbstractCheckstyleReport.executeReport(AbstractCheckstyleReport.java:473) at org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:154) at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:255) at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:143) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) ... 28 more {code}