SonarQube无法分析文件（NullPointerException）

我的Java 8项目中有类似的内容：

import java.util.function.Function;

public class Foo {

    private static final Function<Object, Object> FOO = o -> {
        return null;
    };
}

每次运行SonarQube分析时，都会失败，并显示NullPointerException

mvn clean install
mvn sonar:sonar

例外：

SonarQube is unable to analyze file : '/Users/rzueger/Development/experimental/gitautomergetest/myclone/src/main/java/ch/rallo/automerge/Foo.java'
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
    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:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    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.MojoExecutionException: SonarQube is unable to analyze file : '/Users/rzueger/Development/experimental/gitautomergetest/myclone/src/main/java/ch/rallo/automerge/Foo.java'
    at org.codehaus.mojo.sonar.bootstrap.ExceptionHandling.handle(ExceptionHandling.java:41)
    at org.codehaus.mojo.sonar.bootstrap.RunnerBootstraper.execute(RunnerBootstraper.java:139)
    at org.codehaus.mojo.sonar.SonarMojo.execute(SonarMojo.java:132)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    ... 19 more
Caused by: org.sonar.squidbridge.api.AnalysisException: SonarQube is unable to analyze file : '/Users/rzueger/Development/experimental/gitautomergetest/myclone/src/main/java/ch/rallo/automerge/Foo.java'
    at org.sonar.java.ast.AstScanner.simpleScan(AstScanner.java:114)
    at org.sonar.java.ast.AstScanner.scan(AstScanner.java:75)
    at org.sonar.java.JavaSquid.scanSources(JavaSquid.java:122)
    at org.sonar.java.JavaSquid.scan(JavaSquid.java:115)
    at org.sonar.plugins.java.JavaSquidSensor.analyse(JavaSquidSensor.java:92)
    at org.sonar.batch.phases.SensorsExecutor.executeSensor(SensorsExecutor.java:59)
    at org.sonar.batch.phases.SensorsExecutor.execute(SensorsExecutor.java:51)
    at org.sonar.batch.phases.DatabaseModePhaseExecutor.execute(DatabaseModePhaseExecutor.java:120)
    at org.sonar.batch.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:264)
    at org.sonar.api.platform.ComponentContainer.startComponents(ComponentContainer.java:92)
    at org.sonar.api.platform.ComponentContainer.execute(ComponentContainer.java:77)
    at org.sonar.batch.scan.ProjectScanContainer.scan(ProjectScanContainer.java:235)
    at org.sonar.batch.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:230)
    at org.sonar.batch.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:220)
    at org.sonar.api.platform.ComponentContainer.startComponents(ComponentContainer.java:92)
    at org.sonar.api.platform.ComponentContainer.execute(ComponentContainer.java:77)
    at org.sonar.batch.scan.ScanTask.scan(ScanTask.java:57)
    at org.sonar.batch.scan.ScanTask.execute(ScanTask.java:45)
    at org.sonar.batch.bootstrap.TaskContainer.doAfterStart(TaskContainer.java:135)
    at org.sonar.api.platform.ComponentContainer.startComponents(ComponentContainer.java:92)
    at org.sonar.api.platform.ComponentContainer.execute(ComponentContainer.java:77)
    at org.sonar.batch.bootstrap.GlobalContainer.executeTask(GlobalContainer.java:158)
    at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:95)
    at org.sonar.batch.bootstrapper.Batch.execute(Batch.java:67)
    at org.sonar.runner.batch.IsolatedLauncher.execute(IsolatedLauncher.java:48)
    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:497)
    at org.sonar.runner.impl.BatchLauncher$1.delegateExecution(BatchLauncher.java:87)
    at org.sonar.runner.impl.BatchLauncher$1.run(BatchLauncher.java:75)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.sonar.runner.impl.BatchLauncher.doExecute(BatchLauncher.java:69)
    at org.sonar.runner.impl.BatchLauncher.execute(BatchLauncher.java:50)
    at org.sonar.runner.api.EmbeddedRunner.doExecute(EmbeddedRunner.java:102)
    at org.sonar.runner.api.Runner.execute(Runner.java:100)
    at org.codehaus.mojo.sonar.bootstrap.RunnerBootstraper.execute(RunnerBootstraper.java:135)
    ... 22 more
Caused by: java.lang.NullPointerException
    at org.sonar.java.checks.ReturnEmptyArrayyNotNullCheck.visitNode(ReturnEmptyArrayyNotNullCheck.java:149)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:95)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visitChildren(SubscriptionVisitor.java:113)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:97)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visitChildren(SubscriptionVisitor.java:113)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:97)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visitChildren(SubscriptionVisitor.java:113)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:97)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visitChildren(SubscriptionVisitor.java:113)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:97)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visitChildren(SubscriptionVisitor.java:113)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:97)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.scanTree(SubscriptionVisitor.java:73)
    at org.sonar.java.ast.visitors.SubscriptionVisitor.scanFile(SubscriptionVisitor.java:67)
    at org.sonar.java.checks.ReturnEmptyArrayyNotNullCheck.scanFile(ReturnEmptyArrayyNotNullCheck.java:130)
    at org.sonar.java.model.VisitorsBridge.visitFile(VisitorsBridge.java:122)
    at com.sonar.sslr.impl.ast.AstWalker.walkAndVisit(AstWalker.java:67)
    at org.sonar.java.ast.AstScanner.simpleScan(AstScanner.java:107)
    ... 58 more

这是SonarQube中的已知错误吗？找不到有关此问题的任何错误报告。我正在使用SonarQube 5.1.2。