Gradle 2.5 - MavenPublish failing with NullPointerException

We are currently testing Gradle 2.5 and running into “java.lang.NullPointerException (no error message)” when using Maven-Publish. There are no code or tool changes in our build scripts only upgrading from Gradle 2.4 to 2.5 is causing the publish to fail.
Please see full stacktrace and machine specs below.

Thanks for looking into this.


FAILURE: Build failed with an exception.

  • What went wrong:
    Execution failed for task ‘:ear:publishJavaPublicationToMavenRepository’.

Failed to publish publication ‘java’ to repository 'maven’
java.lang.NullPointerException (no error message)

  • Try:
    Run with --info or --debug option to get more log output.

  • Exception is:
    org.gradle.api.tasks.TaskExecutionException: Execution failed for task ‘:ear:publishJavaPublicationToMavenRepository’.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
    at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:208)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:186)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:62)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
    at org.gradle.execution.taskgraph.ParallelTaskPlanExecutor.process(ParallelTaskPlanExecutor.java:47)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:111)
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
    at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)
    at org.gradle.initialization.DefaultGradleLauncher$6.run(DefaultGradleLauncher.java:174)
    at org.gradle.internal.Factories$1.create(Factories.java:22)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:47)
    at org.gradle.initialization.DefaultGradleLauncher.runBuildOperation(DefaultGradleLauncher.java:189)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:171)
    at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:35)
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:104)
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:97)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
    at org.gradle.initialization.DefaultGradleLauncher.runRootBuildOperation(DefaultGradleLauncher.java:184)
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:97)
    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:93)
    at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:27)
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:72)
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:44)
    at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:50)
    at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:27)
    at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:40)
    at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)
    at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)
    at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)
    at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)
    at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
    at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
    at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
    at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
    at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
    at org.gradle.launcher.Main.doAction(Main.java:33)
    at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:600)
    at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
    at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
    at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:600)
    at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)
    at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:127)
    at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
    Caused by: org.gradle.api.artifacts.PublishException: Failed to publish publication ‘java’ to repository 'maven’
    at org.gradle.api.publish.internal.PublishOperation.run(PublishOperation.java:38)
    at org.gradle.api.publish.maven.tasks.PublishToMavenRepository.doPublish(PublishToMavenRepository.java:77)
    at org.gradle.api.publish.maven.tasks.PublishToMavenRepository.publish(PublishToMavenRepository.java:73)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:600)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:226)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:219)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:208)
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:585)
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:568)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
    … 69 more
    Caused by: java.lang.NullPointerException
    at org.sonatype.aether.impl.internal.Utils$1.compare(Utils.java:32)
    at org.sonatype.aether.impl.internal.Utils$1.compare(Utils.java:30)
    at java.util.Arrays.mergeSort(Arrays.java:2874)
    at java.util.Arrays.sort(Arrays.java:3251)
    at java.util.Arrays.sort(Arrays.java:3269)
    at java.util.Collections.sort(Collections.java:1961)
    at org.sonatype.aether.impl.internal.Utils.sortMetadataGeneratorFactories(Utils.java:40)
    at org.sonatype.aether.impl.internal.DefaultDeployer.getMetadataGenerators(DefaultDeployer.java:327)
    at org.sonatype.aether.impl.internal.DefaultDeployer.deploy(DefaultDeployer.java:238)
    at org.sonatype.aether.impl.internal.DefaultDeployer.deploy(DefaultDeployer.java:211)
    at org.sonatype.aether.impl.internal.DefaultRepositorySystem.deploy(DefaultRepositorySystem.java:443)
    at org.gradle.api.publication.maven.internal.action.MavenDeployAction.publishArtifacts(MavenDeployAction.java:75)
    at org.gradle.api.publication.maven.internal.action.AbstractMavenPublishAction.publish(AbstractMavenPublishAction.java:85)
    at org.gradle.api.publication.maven.internal.action.MavenDeployAction.publish(MavenDeployAction.java:34)
    at org.gradle.api.publish.maven.internal.publisher.MavenRemotePublisher$GradleWagonMavenDeployAction.publish(MavenRemotePublisher.java:88)
    at org.gradle.api.publish.maven.internal.publisher.AbstractMavenPublisher.execute(AbstractMavenPublisher.java:70)
    at org.gradle.api.publish.maven.internal.publisher.AbstractMavenPublisher.publish(AbstractMavenPublisher.java:47)
    at org.gradle.api.publish.maven.internal.publisher.StaticLockingMavenPublisher.publish(StaticLockingMavenPublisher.java:38)
    at org.gradle.api.publish.maven.internal.publisher.ValidatingMavenPublisher.publish(ValidatingMavenPublisher.java:48)
    at org.gradle.api.publish.maven.tasks.PublishToMavenRepository$1.publish(PublishToMavenRepository.java:83)
    at org.gradle.api.publish.internal.PublishOperation.run(PublishOperation.java:36)
    … 83 more

BUILD FAILED

Total time: 54.758 secs


Gradle 2.5

Build time: 2015-07-08 07:38:37 UTC
Build number: none
Revision: 093765bccd3ee722ed5310583e5ed140688a8c2b
Groovy: 2.3.10
Ant: Apache Ant™ version 1.9.3 compiled on December 23 2013
JVM: 1.6.0 (IBM Corporation 2.4)
OS: Windows 7 6.1 build 7601 Service Pack 1 x86

@klehno00 I’ve been unable to reproduce this. It looks like this is only happening with the ear project (:ear:publishJavaPublicationToMavenRepository). I need to know a little more about your setup:

  • Does the ear projects’ publication configuration differ from the others?
  • What does the directory structure of your ear project look like?
  • Can you share your build script for the ear project (at least the publishing and repository related segments).

A bare-bones example which reproduces the issue would be very useful to help diagnose.

Doesn’t allow me to send a message with zip file to include code examples.
How can I get this to you?

Github would be good or a gist with code snippets

Please see the code snippets here https://gist.github.com/klehno00/bba2dd6bf28febbb07a7/revisions

The “ear” project does not have a different publication configuration. I get the same error for any other project.
Project directory structures usually look like:

module
±build.gradle
±contract
±-src
±–main
±----java
±service
±web

@klehno00 I’d like to try an eliminate any potential environment issues (OS, JDK, local maven settings, etc). Can you try using the following sample to publish to a repository: http://github.com/adrianbk/gradle-forum-issues/tree/master/25-maven-npe .

I used you code example and only configured our Artifactory server url and credentials.
When running it same error appears.

D:\testMaven\25-maven-npe>gradlew --version


Gradle 2.5

Build time: 2015-07-08 07:38:37 UTC
Build number: none
Revision: 093765bccd3ee722ed5310583e5ed140688a8c2b

Groovy: 2.3.10
Ant: Apache Ant™ version 1.9.3 compiled on December 23 2013
JVM: 1.6.0 (IBM Corporation 2.4)
OS: Windows 7 6.1 build 7601 Service Pack 1 x86

D:\testMaven\25-maven-npe>gradlew clean build publish -i -S
Starting Build
Settings evaluated using empty settings script.
Projects loaded. Root project using build file ‘D:\testMaven\25-maven-npe\build.gradle’.
Included projects: [root project ‘25-maven-npe’]
Evaluating root project ‘25-maven-npe’ using build file ‘D:\testMaven\25-maven-npe\build.gradle’.
All projects evaluated.
Selected primary task ‘clean’ from project :
Selected primary task ‘build’ from project :
Selected primary task ‘publish’ from project :
Tasks to be executed: [task ‘:clean’, task ‘:compileJava’, task ‘:processResources’, task ‘:classes’, task ‘:jar’, task ‘:assemble’, task ‘:
compileTestJava’, task ‘:processTestResources’, task ‘:testClasses’, task ‘:test’, task ‘:check’, task ‘:build’, task ‘:generatePomFileForJa
vaPublication’, task ‘:sourcesJar’, task ‘:publishJavaPublicationToMavenRepository’, task ‘:publish’]
:clean (Thread[main,5,main]) started.
:clean
Executing task ‘:clean’ (up-to-date check took 0.0010 secs) due to:
Task has not declared any outputs.
:clean (Thread[main,5,main]) completed. Took 0.035 secs.
:compileJava (Thread[main,5,main]) started.
:compileJava
Executing task ‘:compileJava’ (up-to-date check took 0.071 secs) due to:
Output file D:\testMaven\25-maven-npe\build\classes\main has changed.
Output file D:\testMaven\25-maven-npe\build\dependency-cache has changed.
Output file D:\testMaven\25-maven-npe\build\classes\main\SomeSource.class has been removed.
All input files are considered out-of-date for incremental task ‘:compileJava’.
Compiling with JDK Java compiler API.
:compileJava (Thread[main,5,main]) completed. Took 0.504 secs.
:processResources (Thread[main,5,main]) started.
:processResources
file or directory ‘D:\testMaven\25-maven-npe\src\main\resources’, not found
Skipping task ‘:processResources’ as it has no source files.
:processResources UP-TO-DATE
:processResources (Thread[main,5,main]) completed. Took 0.041 secs.
:classes (Thread[main,5,main]) started.
:classes
Skipping task ‘:classes’ as it has no actions.
:classes (Thread[main,5,main]) completed. Took 0.016 secs.
:jar (Thread[main,5,main]) started.
:jar
Executing task ‘:jar’ (up-to-date check took 0.0090 secs) due to:
Output file D:\testMaven\25-maven-npe\build\libs\25-maven-npe.jar has changed.
Output file D:\testMaven\25-maven-npe\build\libs\25-maven-npe.jar has been removed.
:jar (Thread[main,5,main]) completed. Took 0.077 secs.
:assemble (Thread[main,5,main]) started.
:assemble
Skipping task ‘:assemble’ as it has no actions.
:assemble (Thread[main,5,main]) completed. Took 0.015 secs.
:compileTestJava (Thread[main,5,main]) started.
:compileTestJava
file or directory ‘D:\testMaven\25-maven-npe\src\test\java’, not found
Skipping task ‘:compileTestJava’ as it has no source files.
:compileTestJava UP-TO-DATE
:compileTestJava (Thread[main,5,main]) completed. Took 0.039 secs.
:processTestResources (Thread[main,5,main]) started.
:processTestResources
file or directory ‘D:\testMaven\25-maven-npe\src\test\resources’, not found
Skipping task ‘:processTestResources’ as it has no source files.
:processTestResources UP-TO-DATE
:processTestResources (Thread[main,5,main]) completed. Took 0.043 secs.
:testClasses (Thread[main,5,main]) started.
:testClasses
Skipping task ‘:testClasses’ as it has no actions.
:testClasses UP-TO-DATE
:testClasses (Thread[main,5,main]) completed. Took 0.026 secs.
:test (Thread[main,5,main]) started.
:test
file or directory ‘D:\testMaven\25-maven-npe\build\classes\test’, not found
Skipping task ‘:test’ as it has no source files.
:test UP-TO-DATE
:test (Thread[main,5,main]) completed. Took 0.034 secs.
:check (Thread[main,5,main]) started.
:check
Skipping task ‘:check’ as it has no actions.
:check UP-TO-DATE
:check (Thread[main,5,main]) completed. Took 0.022 secs.
:build (Thread[main,5,main]) started.
:build
Skipping task ‘:build’ as it has no actions.
:build (Thread[main,5,main]) completed. Took 0.015 secs.
:generatePomFileForJavaPublication (Thread[main,5,main]) started.
:generatePomFileForJavaPublication
Executing task ‘:generatePomFileForJavaPublication’ (up-to-date check took 0.0010 secs) due to:
Task.upToDateWhen is false.
:generatePomFileForJavaPublication (Thread[main,5,main]) completed. Took 0.055 secs.
:sourcesJar (Thread[main,5,main]) started.
:sourcesJar
file or directory ‘D:\testMaven\25-maven-npe\src\main\resources’, not found
Executing task ‘:sourcesJar’ (up-to-date check took 0.023 secs) due to:
Output file D:\testMaven\25-maven-npe\build\libs\25-maven-npe-sources.jar has changed.
Output file D:\testMaven\25-maven-npe\build\libs\25-maven-npe-sources.jar has been removed.
file or directory ‘D:\testMaven\25-maven-npe\src\main\resources’, not found
:sourcesJar (Thread[main,5,main]) completed. Took 0.096 secs.
:publishJavaPublicationToMavenRepository (Thread[main,5,main]) started.
:publishJavaPublicationToMavenRepository
Executing task ‘:publishJavaPublicationToMavenRepository’ (up-to-date check took 0.0 secs) due to:
Task has not declared any outputs.
Publishing to repository org.gradle.api.internal.artifacts.repositories.DefaultMavenArtifactRepository_Decorated@27682768
Deploying to http://usmlvv1qmp645:8081/artifactory/sc-libs-snapshot-local
:publishJavaPublicationToMavenRepository FAILED
:publishJavaPublicationToMavenRepository (Thread[main,5,main]) completed. Took 0.58 secs.

FAILURE: Build failed with an exception.

  • What went wrong:
    Execution failed for task ‘:publishJavaPublicationToMavenRepository’.

Failed to publish publication ‘java’ to repository 'maven’
java.lang.NullPointerException (no error message)

  • Try:
    Run with --debug option to get more log output.

  • Exception is:
    org.gradle.api.tasks.TaskExecutionException: Execution failed for task ‘:publishJavaPublicationToMavenRepository’.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
    at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:208)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:186)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:62)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:111)
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
    at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)
    at org.gradle.initialization.DefaultGradleLauncher$6.run(DefaultGradleLauncher.java:174)
    at org.gradle.internal.Factories$1.create(Factories.java:22)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:47)
    at org.gradle.initialization.DefaultGradleLauncher.runBuildOperation(DefaultGradleLauncher.java:189)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:171)
    at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:35)
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:104)
    at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:97)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
    at org.gradle.initialization.DefaultGradleLauncher.runRootBuildOperation(DefaultGradleLauncher.java:184)
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:97)
    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:93)
    at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:27)
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:72)
    at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:44)
    at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:50)
    at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:27)
    at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:40)
    at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)
    at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)
    at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)
    at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)
    at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
    at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
    at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
    at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
    at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
    at org.gradle.launcher.Main.doAction(Main.java:33)
    at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:600)
    at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
    at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
    at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:600)
    at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)
    at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:127)
    at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
    Caused by: org.gradle.api.artifacts.PublishException: Failed to publish publication ‘java’ to repository 'maven’
    at org.gradle.api.publish.internal.PublishOperation.run(PublishOperation.java:38)
    at org.gradle.api.publish.maven.tasks.PublishToMavenRepository.doPublish(PublishToMavenRepository.java:77)
    at org.gradle.api.publish.maven.tasks.PublishToMavenRepository.publish(PublishToMavenRepository.java:73)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:600)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTask
    Factory.java:226)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFa
    ctory.java:219)
    at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFa
    ctory.java:208)
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:585)
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:568)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
    … 69 more
    Caused by: java.lang.NullPointerException
    at org.sonatype.aether.impl.internal.Utils$1.compare(Utils.java:32)
    at org.sonatype.aether.impl.internal.Utils$1.compare(Utils.java:30)
    at java.util.Arrays.mergeSort(Arrays.java:2874)
    at java.util.Arrays.sort(Arrays.java:3251)
    at java.util.Arrays.sort(Arrays.java:3269)
    at java.util.Collections.sort(Collections.java:1961)
    at org.sonatype.aether.impl.internal.Utils.sortMetadataGeneratorFactories(Utils.java:40)
    at org.sonatype.aether.impl.internal.DefaultDeployer.getMetadataGenerators(DefaultDeployer.java:327)
    at org.sonatype.aether.impl.internal.DefaultDeployer.deploy(DefaultDeployer.java:238)
    at org.sonatype.aether.impl.internal.DefaultDeployer.deploy(DefaultDeployer.java:211)
    at org.sonatype.aether.impl.internal.DefaultRepositorySystem.deploy(DefaultRepositorySystem.java:443)
    at org.gradle.api.publication.maven.internal.action.MavenDeployAction.publishArtifacts(MavenDeployAction.java:75)
    at org.gradle.api.publication.maven.internal.action.AbstractMavenPublishAction.publish(AbstractMavenPublishAction.java:85)
    at org.gradle.api.publication.maven.internal.action.MavenDeployAction.publish(MavenDeployAction.java:34)
    at org.gradle.api.publish.maven.internal.publisher.MavenRemotePublisher$GradleWagonMavenDeployAction.publish(MavenRemotePublisher.ja
    va:88)
    at org.gradle.api.publish.maven.internal.publisher.AbstractMavenPublisher.execute(AbstractMavenPublisher.java:70)
    at org.gradle.api.publish.maven.internal.publisher.AbstractMavenPublisher.publish(AbstractMavenPublisher.java:47)
    at org.gradle.api.publish.maven.internal.publisher.StaticLockingMavenPublisher.publish(StaticLockingMavenPublisher.java:38)
    at org.gradle.api.publish.maven.internal.publisher.ValidatingMavenPublisher.publish(ValidatingMavenPublisher.java:48)
    at org.gradle.api.publish.maven.tasks.PublishToMavenRepository$1.publish(PublishToMavenRepository.java:83)
    at org.gradle.api.publish.internal.PublishOperation.run(PublishOperation.java:36)
    … 83 more

BUILD FAILED

Total time: 6.676 secs
Stopped 0 compiler daemon(s).

D:\testMaven\25-maven-npe>

@klehno00 thanks for verifying. I was able to reproduce it on windows using the IBM JDK. I will post here when I find out more.

@klehno00 This has been fixed on master and will be released with 2.7. Would you mind verifying with the latest nightly build https://gradle.org/gradle-nightly-build/.

I was verifying with the latest nightly. Build/test and publish completed successfully. Thank you.