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How to change the port number for hpi:run

I'm trying to run the below command to package the hpi file in target folder
hpi:run
And observed the below error message that says the port has been used already. I just tried to kill the port by manually but i don't have privilege to do that. Is it possible to customize the port no by passing as an argument -Dhpi.port=xxx something like this?
Exception:
java.net.BindException: Address already in use: bind at
sun.nio.ch.Net.bind0(Native Method) at
sun.nio.ch.Net.bind(Net.java:433) at
sun.nio.ch.Net.bind(Net.java:425) at
sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at
org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:321)
at
org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at
org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at
org.eclipse.jetty.maven.plugin.MavenServerConnector.doStart(MavenServerConnector.java:120)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:366) at
org.eclipse.jetty.maven.plugin.JettyServer.doStart(JettyServer.java:73)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at
org.jenkinsci.maven.plugins.hpi.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:567)
at
org.jenkinsci.maven.plugins.hpi.RunMojo.startJetty(RunMojo.java:660)
at
org.jenkinsci.maven.plugins.hpi.AbstractJettyMojo.execute(AbstractJettyMojo.java:390)
at org.jenkinsci.maven.plugins.hpi.RunMojo.execute(RunMojo.java:353)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
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:498) 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)
2019-02-06 13:34:37.404:WARN:oejuc.AbstractLifeCycle:main: FAILED
org.eclipse.jetty.maven.plugin.JettyServer#4802791f:
java.net.BindException: Address already in use: bind

From Jenkins documentation:
Runs Jenkins with the current plugin project.
This only needs the source files to be compiled, so run in the compile
phase.
To specify the HTTP port, use -Djetty.port=PORT
So, try to use -Djetty.port=PORT parameter.

Cannot execute Findbugs in sonar analysis in Jenkins

I am trying to execute the sonar analysis from jenkins
clean install sonar:sonar -Dsonar.host.url=http://sonarhost:8090 -Dsonar.projectName=demoProject -Dsonar.branch=master
[ERROR] Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.2:sonar (default-cli) on project demoProject: Can not execute Findbugs: SAX2 driver class org.apache.xerces.parsers.SAXParser not found -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.2:sonar (default-cli) on project demoProject: Can not execute Findbugs
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:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:117)
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.launchStandard(Launcher.java:329)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:181)
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 hudson.maven.Maven3Builder.call(Maven3Builder.java:136)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:71)
at hudson.remoting.UserRequest.perform(UserRequest.java:153)
at hudson.remoting.UserRequest.perform(UserRequest.java:50)
at hudson.remoting.Request$2.run(Request.java:332)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Any ideas to fix it

Error while project analysis: SonarQube is unable to analyze file, IllegalStateException

One of our Java projects cannot be analyzed on SQ. The following error is thrown:
[ERROR] Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.0.1:sonar (default-cli) on project PPP:
SonarQube is unable to analyze file : '<file-name>.java': IllegalStateException
The java file itself looks good. Nothing extraordinary in code.
We run SQ v5.6.3.
Do you know what causes the problem and how it can be solved?
Excerpt from the log:
[ERROR] Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.0.1:sonar (default-cli) on project <project-name>: SonarQube is unable to analyze file : '<file-name>.java': IllegalStateException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.0.1:sonar (default-cli) on project <project-name>: SonarQube is unable to analyze file : '<file-name>.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:498)
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 : '<file-name>.java'
at org.sonarsource.scanner.maven.bootstrap.ExceptionHandling.handle(ExceptionHandling.java:36)
at org.sonarsource.scanner.maven.bootstrap.RunnerBootstrapper.execute(RunnerBootstrapper.java:81)
at org.sonarsource.scanner.maven.SonarQubeMojo.execute(SonarQubeMojo.java:112)
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 : '<file-name>.java'
at org.sonar.java.ast.JavaAstScanner.simpleScan(JavaAstScanner.java:93)
at org.sonar.java.ast.JavaAstScanner.scan(JavaAstScanner.java:67)
at org.sonar.java.JavaSquid.scanSources(JavaSquid.java:119)
at org.sonar.java.JavaSquid.scan(JavaSquid.java:113)
at org.sonar.plugins.java.JavaSquidSensor.execute(JavaSquidSensor.java:87)
at org.sonar.batch.sensor.SensorWrapper.analyse(SensorWrapper.java:57)
at org.sonar.batch.phases.SensorsExecutor.executeSensor(SensorsExecutor.java:58)
at org.sonar.batch.phases.SensorsExecutor.execute(SensorsExecutor.java:50)
at org.sonar.batch.phases.AbstractPhaseExecutor.execute(AbstractPhaseExecutor.java:83)
at org.sonar.batch.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:192)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.batch.scan.ProjectScanContainer.scan(ProjectScanContainer.java:241)
at org.sonar.batch.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:236)
at org.sonar.batch.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:234)
at org.sonar.batch.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:226)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.batch.task.ScanTask.execute(ScanTask.java:47)
at org.sonar.batch.task.TaskContainer.doAfterStart(TaskContainer.java:86)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.batch.bootstrap.GlobalContainer.executeTask(GlobalContainer.java:106)
at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:119)
at org.sonar.runner.batch.BatchIsolatedLauncher.execute(BatchIsolatedLauncher.java:67)
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.sonar.runner.impl.IsolatedLauncherProxy.invoke(IsolatedLauncherProxy.java:61)
at com.sun.proxy.$Proxy16.execute(Unknown Source)
at org.sonar.runner.api.EmbeddedRunner.doExecute(EmbeddedRunner.java:274)
at org.sonar.runner.api.EmbeddedRunner.runAnalysis(EmbeddedRunner.java:165)
at org.sonar.runner.api.EmbeddedRunner.runAnalysis(EmbeddedRunner.java:152)
at org.sonarsource.scanner.maven.bootstrap.RunnerBootstrapper.execute(RunnerBootstrapper.java:78)
... 22 more
Caused by: java.lang.IllegalStateException
at com.google.common.base.Preconditions.checkState(Preconditions.java:159)
at org.sonar.java.resolve.BytecodeCompleter.complete(BytecodeCompleter.java:85)
at org.sonar.java.resolve.JavaSymbol.complete(JavaSymbol.java:111)
at org.sonar.java.resolve.JavaSymbol.isFlag(JavaSymbol.java:246)
at org.sonar.java.resolve.JavaSymbol.isEnum(JavaSymbol.java:197)
at org.sonar.java.checks.MembersDifferOnlyByCapitalizationCheck.isVariableToExtract(MembersDifferOnlyByCapitalizationCheck.java:200)
at org.sonar.java.checks.MembersDifferOnlyByCapitalizationCheck.extractMembers(MembersDifferOnlyByCapitalizationCheck.java:191)
at org.sonar.java.checks.MembersDifferOnlyByCapitalizationCheck.retrieveMembers(MembersDifferOnlyByCapitalizationCheck.java:182)
at org.sonar.java.checks.MembersDifferOnlyByCapitalizationCheck.visitNode(MembersDifferOnlyByCapitalizationCheck.java:56)
at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:95)
at org.sonar.java.ast.visitors.SubscriptionVisitor.visitChildren(SubscriptionVisitor.java:120)
at org.sonar.java.ast.visitors.SubscriptionVisitor.visit(SubscriptionVisitor.java:97)
at org.sonar.java.ast.visitors.SubscriptionVisitor.scanTree(SubscriptionVisitor.java:78)
at org.sonar.java.ast.visitors.SubscriptionVisitor.scanFile(SubscriptionVisitor.java:64)
at org.sonar.java.model.VisitorsBridge.visitFile(VisitorsBridge.java:123)
at org.sonar.java.ast.JavaAstScanner.simpleScan(JavaAstScanner.java:84)
... 56 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]

Probably the analysis is running with incompatible Java version of your code, check the version of Java in the classpath. For instance, in my case the analysis was running with Java 7 instead of Java 8.

SonarQube is unable to analyze file (NullPointerException)

I have something like this in my Java 8 project:
import java.util.function.Function;
public class Foo {
private static final Function<Object, Object> FOO = o -> {
return null;
};
}
Every time I'm running SonarQube analysis, it fails with a NullPointerException
mvn clean install
mvn sonar:sonar
Exception:
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
Is this a known bug in SonarQube? Couldn't find any bug report concerning this problem. I'm using SonarQube 5.1.2.

This bug should have been fixed in sonar-java-plugin 3.1.
https://jira.sonarsource.com/browse/SONARJAVA-986

java.lang.NoClassDefFoundError: Lorg/sonatype/aether/RepositorySystem; [duplicate]

This question already has an answer here:
Android Studio : Error injecting while Appengine backend generation
(1 answer)
Closed 8 years ago.
How to fix this error:
[WARNING] Error injecting: com.google.appengine.devappserver.DevAppServerRunner
java.lang.NoClassDefFoundError: Lorg/sonatype/aether/RepositorySystem;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2397)
at java.lang.Class.getDeclaredFields(Class.java:1806)
at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:661)
at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:366)
at com.google.inject.internal.ConstructorBindingImpl.getInternalDependencies(ConstructorBindingImpl.java:165)
at com.google.inject.internal.InjectorImpl.getInternalDependencies(InjectorImpl.java:609)
at com.google.inject.internal.InjectorImpl.cleanup(InjectorImpl.java:565)
at com.google.inject.internal.InjectorImpl.initializeJitBinding(InjectorImpl.java:551)
at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:865)
at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:790)
at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:278)
at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:210)
at com.google.inject.internal.InjectorImpl.getProviderOrThrow(InjectorImpl.java:986)
at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:1019)
at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:982)
at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1032)
at org.eclipse.sisu.space.AbstractDeferredClass.get(AbstractDeferredClass.java:48)
at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:86)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactoryToInitializableAdapter.java:55)
at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:70)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
at org.eclipse.sisu.plexus.PlexusLifecycleManager.onProvision(PlexusLifecycleManager.java:133)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:109)
at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:68)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToInitializableAdapter.java:47)
at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1047)
at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
at com.google.inject.Scopes$1$1.get(Scopes.java:59)
at org.eclipse.sisu.inject.LazyBeanEntry.getValue(LazyBeanEntry.java:82)
at org.eclipse.sisu.plexus.LazyPlexusBean.getValue(LazyPlexusBean.java:51)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:260)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:252)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo(DefaultMavenPluginManager.java:459)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:97)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
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:317)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
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 org.codehaus.classworlds.Launcher.main(Launcher.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.ClassNotFoundException: org.sonatype.aether.RepositorySystem
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
... 63 more
I'm using:
java-1.7.0-openjdk-amd64
Maven 3.1.1
Ubuntu 13.04, 64-bit

You don't say how you are using Maven, but I suspect that you are just generating a JAR file for your application.
You should use the Maven GAE plugin and specifying the relevant 'aether' libraries as dependencies in your POM file.
(Note: I've not had personal experience with this, but the plugin documentation implies that it will take care of the dependencies for you.)

It appears that you have an issue with your java classpath. The missing jar seems to be this one:
http://mvnrepository.com/artifact/org.sonatype.aether/aether-api/1.13.1
Specifically, here is the jar: http://repo1.maven.org/maven2/org/sonatype/aether/aether-api/1.13.1/aether-api-1.13.1.jar
Put that jar in your classpath. It contains the org.sonatype.aether.RepositorySystem class.