I am in the process of switching our build system from gradle 2.14.1 (where this isn’t present) to 3.1 (where the build fails). I’ve tried this with and without parallel mode and with and without the daemon. Same failure.
Any hints as to what to look for?
./gradlew :ckannotations:createDistribution --stacktrace
* What went wrong:
Execution failed for task ':ckannotations:createDistribution'.
> 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 ':ckannotations:createDistribution'.
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$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:233)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:215)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:74)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:55)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
Caused by: java.lang.NullPointerException
at org.gradle.util.CollectionUtils.join(CollectionUtils.java:547)
at org.gradle.util.CollectionUtils.join(CollectionUtils.java:517)
at org.gradle.api.file.RelativePath.getPathString(RelativePath.java:100)
at org.gradle.api.internal.file.copy.FileCopyAction$FileCopyDetailsInternalAction.processFile(FileCopyAction.java:43)
at org.gradle.api.internal.file.copy.SyncCopyActionDecorator$1$1.processFile(SyncCopyActionDecorator.java:59)
at org.gradle.api.internal.file.copy.NormalizingCopyActionDecorator$1$1.processFile(NormalizingCopyActionDecorator.java:66)
at org.gradle.api.internal.file.copy.DuplicateHandlingCopyActionDecorator$1$1.processFile(DuplicateHandlingCopyActionDecorator.java:60)
at org.gradle.api.internal.file.copy.CopyFileVisitorImpl.processFile(CopyFileVisitorImpl.java:60)
at org.gradle.api.internal.file.copy.CopyFileVisitorImpl.visitFile(CopyFileVisitorImpl.java:44)
at org.gradle.api.internal.file.AbstractFileTree$FilteredFileTreeImpl$1.visitFile(AbstractFileTree.java:150)
at org.gradle.api.internal.file.collections.SingletonFileTree.visit(SingletonFileTree.java:44)
at org.gradle.api.internal.file.collections.FileTreeAdapter.visit(FileTreeAdapter.java:109)
at org.gradle.api.internal.file.AbstractFileTree$FilteredFileTreeImpl.visit(AbstractFileTree.java:141)
at org.gradle.api.internal.file.CompositeFileTree.visit(CompositeFileTree.java:58)
at org.gradle.api.internal.file.copy.CopySpecActionImpl.execute(CopySpecActionImpl.java:37)
at org.gradle.api.internal.file.copy.CopySpecActionImpl.execute(CopySpecActionImpl.java:24)
at org.gradle.api.internal.file.copy.DefaultCopySpec$DefaultCopySpecResolver.walk(DefaultCopySpec.java:570)
at org.gradle.api.internal.file.copy.DefaultCopySpec$DefaultCopySpecResolver.walk(DefaultCopySpec.java:572)
at org.gradle.api.internal.file.copy.DefaultCopySpec.walk(DefaultCopySpec.java:380)
at org.gradle.api.internal.file.copy.DelegatingCopySpecInternal.walk(DelegatingCopySpecInternal.java:236)
at org.gradle.api.internal.file.copy.CopySpecBackedCopyActionProcessingStream.process(CopySpecBackedCopyActionProcessingStream.java:36)
at org.gradle.api.internal.file.copy.DuplicateHandlingCopyActionDecorator$1.process(DuplicateHandlingCopyActionDecorator.java:44)
at org.gradle.api.internal.file.copy.NormalizingCopyActionDecorator$1.process(NormalizingCopyActionDecorator.java:57)
at org.gradle.api.internal.file.copy.SyncCopyActionDecorator$1.process(SyncCopyActionDecorator.java:56)
at org.gradle.api.internal.file.copy.FileCopyAction.execute(FileCopyAction.java:35)
at org.gradle.api.internal.file.copy.SyncCopyActionDecorator.execute(SyncCopyActionDecorator.java:54)
at org.gradle.api.internal.file.copy.NormalizingCopyActionDecorator.execute(NormalizingCopyActionDecorator.java:53)
at org.gradle.api.internal.file.copy.DuplicateHandlingCopyActionDecorator.execute(DuplicateHandlingCopyActionDecorator.java:42)
at org.gradle.api.internal.file.copy.CopyActionExecuter.execute(CopyActionExecuter.java:38)
at org.gradle.api.tasks.AbstractCopyTask.copy(AbstractCopyTask.java:94)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.doExecute(DefaultTaskClassInfoStore.java:136)
at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:129)
at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:118)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:623)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:606)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
... 14 more