Multiple matches found for jquery.min.js

[Meijuh]

When applying the 0.9.0 Gradle plugin to my multi module project I am running into the following error.

Execution failed for task '...:decycleMain'.
> A failure occurred while executing de.obqo.decycle.gradle.DecycleWorker
   > Multiple matches found for jquery.min.js. Please provide a more specific path, for example by including a version number.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

Any ideas regarding a fix? Is it possible to disable reporting as a workaround?

[obecker]

Hi @Meijuh, could you please add the stack trace that is printed when running gradle with --stacktrace. Thanks a lot!

[Meijuh]

This is the error with stacktrace (I changed the names of my subprojects to ...):

decycleMain FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':...:decycleMain'.
> A failure occurred while executing de.obqo.decycle.gradle.DecycleWorker
   > Multiple matches found for jquery.min.js. Please provide a more specific path, for example by including a version number.

* Try:
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':...:decycleMain'.
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:142)
        at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:282)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:140)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:128)
        at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:77)
        at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
        at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
        at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
        at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:69)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:327)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:314)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:307)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:293)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:420)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:342)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
Caused by: org.gradle.workers.internal.DefaultWorkerExecutor$WorkExecutionException: A failure occurred while executing de.obqo.decycle.gradle.DecycleWorker
        at org.gradle.workers.internal.DefaultWorkerExecutor$WorkItemExecution.waitForCompletion(DefaultWorkerExecutor.java:339)
        at org.gradle.internal.work.DefaultAsyncWorkTracker.lambda$waitForItemsAndGatherFailures$2(DefaultAsyncWorkTracker.java:130)
        at org.gradle.internal.Factories$1.create(Factories.java:31)
        at org.gradle.internal.work.DefaultWorkerLeaseService.withoutLocks(DefaultWorkerLeaseService.java:321)
        at org.gradle.internal.work.DefaultWorkerLeaseService.withoutLocks(DefaultWorkerLeaseService.java:304)
        at org.gradle.internal.work.DefaultWorkerLeaseService.withoutLock(DefaultWorkerLeaseService.java:309)
        at org.gradle.internal.work.DefaultAsyncWorkTracker.waitForItemsAndGatherFailures(DefaultAsyncWorkTracker.java:126)
        at org.gradle.internal.work.DefaultAsyncWorkTracker.waitForItemsAndGatherFailures(DefaultAsyncWorkTracker.java:92)
        at org.gradle.internal.work.DefaultAsyncWorkTracker.waitForAll(DefaultAsyncWorkTracker.java:78)
        at org.gradle.internal.work.DefaultAsyncWorkTracker.waitForCompletion(DefaultAsyncWorkTracker.java:66)
        at org.gradle.api.internal.tasks.execution.TaskExecution$3.run(TaskExecution.java:244)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:29)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$1.execute(DefaultBuildOperationRunner.java:26)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)
        at org.gradle.api.internal.tasks.execution.TaskExecution.executeAction(TaskExecution.java:221)
        at org.gradle.api.internal.tasks.execution.TaskExecution.executeActions(TaskExecution.java:204)
        at org.gradle.api.internal.tasks.execution.TaskExecution.executeWithPreviousOutputFiles(TaskExecution.java:187)
        at org.gradle.api.internal.tasks.execution.TaskExecution.execute(TaskExecution.java:165)
        at org.gradle.internal.execution.steps.ExecuteStep.executeInternal(ExecuteStep.java:89)
        at org.gradle.internal.execution.steps.ExecuteStep.access$000(ExecuteStep.java:40)
        at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:53)
        at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:50)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
        at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:50)
        at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:40)
        at org.gradle.internal.execution.steps.RemovePreviousOutputsStep.execute(RemovePreviousOutputsStep.java:68)
        at org.gradle.internal.execution.steps.RemovePreviousOutputsStep.execute(RemovePreviousOutputsStep.java:38)
        at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:41)
        at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:74)
        at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:55)
        at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:51)
        at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:29)
        at org.gradle.internal.execution.steps.CaptureStateAfterExecutionStep.executeDelegateBroadcastingChanges(CaptureStateAfterExecutionStep.java:124)
        at org.gradle.internal.execution.steps.CaptureStateAfterExecutionStep.execute(CaptureStateAfterExecutionStep.java:80)
        at org.gradle.internal.execution.steps.CaptureStateAfterExecutionStep.execute(CaptureStateAfterExecutionStep.java:58)
        at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:48)
        at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:36)
        at org.gradle.internal.execution.steps.BuildCacheStep.executeWithoutCache(BuildCacheStep.java:181)
        at org.gradle.internal.execution.steps.BuildCacheStep.lambda$execute$1(BuildCacheStep.java:71)
        at org.gradle.internal.Either$Right.fold(Either.java:175)
        at org.gradle.internal.execution.caching.CachingState.fold(CachingState.java:59)
        at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:69)
        at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:47)
        at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:36)
        at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:25)
        at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:36)
        at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:22)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:110)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$2(SkipUpToDateStep.java:56)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:56)
        at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:38)
        at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:73)
        at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:44)
        at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:37)
        at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:27)
        at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:89)
        at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:50)
        at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:114)
        at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:57)
        at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:76)
        at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:50)
        at org.gradle.internal.execution.steps.SkipEmptyWorkStep.executeWithNoEmptySources(SkipEmptyWorkStep.java:254)
        at org.gradle.internal.execution.steps.SkipEmptyWorkStep.executeWithNoEmptySources(SkipEmptyWorkStep.java:209)
        at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:88)
        at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:56)
        at org.gradle.internal.execution.steps.RemoveUntrackedExecutionStateStep.execute(RemoveUntrackedExecutionStateStep.java:32)
        at org.gradle.internal.execution.steps.RemoveUntrackedExecutionStateStep.execute(RemoveUntrackedExecutionStateStep.java:21)
        at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:38)
        at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.execute(LoadPreviousExecutionStateStep.java:43)
        at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.execute(LoadPreviousExecutionStateStep.java:31)
        at org.gradle.internal.execution.steps.AssignWorkspaceStep.lambda$execute$0(AssignWorkspaceStep.java:40)
        at org.gradle.api.internal.tasks.execution.TaskExecution$4.withWorkspace(TaskExecution.java:281)
        at org.gradle.internal.execution.steps.AssignWorkspaceStep.execute(AssignWorkspaceStep.java:40)
        at org.gradle.internal.execution.steps.AssignWorkspaceStep.execute(AssignWorkspaceStep.java:30)
        at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:37)
        at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:27)
        at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:44)
        at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:33)
        at org.gradle.internal.execution.impl.DefaultExecutionEngine$1.execute(DefaultExecutionEngine.java:76)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:139)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:128)
        at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:77)
        at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
        at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
        at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
        at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:69)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:327)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:314)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:307)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:293)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:420)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:342)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
Caused by: org.webjars.MultipleMatchesException: Multiple matches found for jquery.min.js. Please provide a more specific path, for example by including a version number.
        at org.webjars.WebJarAssetLocator.throwMultipleMatchesException(WebJarAssetLocator.java:177)
        at org.webjars.WebJarAssetLocator.getFullPath(WebJarAssetLocator.java:235)
        at de.obqo.decycle.report.ResourcesExtractor.copyWebJarResource(ResourcesExtractor.java:53)
        at de.obqo.decycle.report.ResourcesExtractor.copyResources(ResourcesExtractor.java:33)
        at de.obqo.decycle.gradle.DecycleWorker.createResourcesIfRequired(DecycleWorker.java:93)
        at de.obqo.decycle.gradle.DecycleWorker.execute(DecycleWorker.java:60)
        at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:63)
        at org.gradle.workers.internal.AbstractClassLoaderWorker$1.create(AbstractClassLoaderWorker.java:49)
        at org.gradle.workers.internal.AbstractClassLoaderWorker$1.create(AbstractClassLoaderWorker.java:43)
        at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:100)
        at org.gradle.workers.internal.AbstractClassLoaderWorker.executeInClassLoader(AbstractClassLoaderWorker.java:43)
        at org.gradle.workers.internal.IsolatedClassloaderWorker.run(IsolatedClassloaderWorker.java:49)
        at org.gradle.workers.internal.IsolatedClassloaderWorker.run(IsolatedClassloaderWorker.java:30)
        at org.gradle.workers.internal.IsolatedClassloaderWorkerFactory$1.lambda$execute$0(IsolatedClassloaderWorkerFactory.java:57)
        at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
        at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
        at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
        at org.gradle.workers.internal.IsolatedClassloaderWorkerFactory$1.execute(IsolatedClassloaderWorkerFactory.java:49)
        at org.gradle.workers.internal.DefaultWorkerExecutor.lambda$submitWork$2(DefaultWorkerExecutor.java:205)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:187)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.access$700(DefaultConditionalExecutionQueue.java:120)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner$1.run(DefaultConditionalExecutionQueue.java:162)
        at org.gradle.internal.Factories$1.create(Factories.java:31)
        at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:249)
        at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:109)
        at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:114)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:157)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:126)
        ... 2 more

[obecker]

Hi @Meijuh, thanks for the stack trace. However, I still have no idea why this is failing in your project. Looking at the source of the webjars lib, this happens when in the contents of the jar for the name "jquery" the path part "jquery.min.js" is not unique. However, decycle creates its own gradle configuration, so its dependencies should (hopefully) not interfere with other dependencies in your project. But it seems to me as if decycle uses a different org.webjars:jquery version in your project.

Could you please run gradle dependencies send me the part for decycle? When I run it in my project I'm getting this output:

decycle - The Decycle libraries to be used for this project
\--- de.obqo.decycle:decycle-lib:0.9.0
     +--- org.ow2.asm:asm:9.2
     +--- com.google.guava:guava:31.0.1-jre
     |    +--- com.google.guava:failureaccess:1.0.1
     |    +--- com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
     |    +--- com.google.code.findbugs:jsr305:3.0.2
     |    +--- org.checkerframework:checker-qual:3.12.0
     |    +--- com.google.errorprone:error_prone_annotations:2.7.1
     |    \--- com.google.j2objc:j2objc-annotations:1.3
     +--- com.j2html:j2html:1.5.0
     +--- org.javastack:fontmetrics:1.0.0
     |    \--- org.slf4j:slf4j-api:1.7.30 -> 1.7.32
     +--- org.webjars:webjars-locator-core:0.48
     |    +--- org.slf4j:slf4j-api:1.7.30 -> 1.7.32
     |    \--- io.github.classgraph:classgraph:4.8.115
     +--- org.slf4j:slf4j-api:1.7.32
     +--- org.webjars:bootstrap:4.6.1
     |    +--- org.webjars:jquery:3.5.1 -> 3.6.0
     |    \--- org.webjars:popper.js:1.16.0
     +--- org.webjars.npm:bootstrap-icons:1.7.2
     +--- org.webjars:jquery:3.6.0
     +--- org.webjars.npm:tooltipster:4.2.8
     \--- org.webjars:svg.js:3.1.1

[Meijuh]

This is the output from a single subproject:

decycle - The Decycle libraries to be used for this project
\--- de.obqo.decycle:decycle-lib:0.9.0
     +--- org.ow2.asm:asm:9.2
     +--- com.google.guava:guava:31.0.1-jre -> 31.1-jre
     |    +--- com.google.guava:failureaccess:1.0.1
     |    +--- com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
     |    +--- com.google.code.findbugs:jsr305:3.0.2
     |    +--- org.checkerframework:checker-qual:3.12.0 -> 3.26.0
     |    +--- com.google.errorprone:error_prone_annotations:2.11.0 -> 2.16
     |    \--- com.google.j2objc:j2objc-annotations:1.3
     +--- com.j2html:j2html:1.5.0
     +--- org.javastack:fontmetrics:1.0.0
     |    \--- org.slf4j:slf4j-api:1.7.30 -> 1.7.36
     +--- org.webjars:webjars-locator-core:0.48
     |    +--- org.slf4j:slf4j-api:1.7.30 -> 1.7.36
     |    \--- io.github.classgraph:classgraph:4.8.115
     +--- org.slf4j:slf4j-api:1.7.32 -> 1.7.36
     +--- org.webjars:bootstrap:4.6.1
     |    +--- org.webjars:jquery:3.5.1 -> 3.6.0
     |    \--- org.webjars:popper.js:1.16.0
     +--- org.webjars.npm:bootstrap-icons:1.7.2
     +--- org.webjars:jquery:3.6.0
     +--- org.webjars.npm:tooltipster:4.2.8
     \--- org.webjars:svg.js:3.1.1

Which looks identical to your output.

I actually found now, that it only goes wrong when I run ./gradlew decycle. When I run the decycle task on a single subproject, e.g., ./gradlew :subproject:decycle it runs fine.

Would it help if I try to find a minimal example? I.e., a minimal multi module Gradle project that produces the error?

[obecker]

Would it help if I try to find a minimal example? I.e., a minimal multi module Gradle project that produces the error?

Yes, definitely. My next question would be, how the setup of your project is and how the plugin is installed. Is the parent module also a java project using decycle?

[Meijuh]

It took me a few hours, but I finally found the minimal example. It has nothing to do with having a multi module project.
Minimal example: decycle.zip.
The problem occurs when I add a dependency on the checker framework plugin (https://plugins.gradle.org/plugin/org.checkerframework/0.6.18). This plugin has a transitive dependency on jquery 3.5.1, while you are using 3.6.0. You can check this by running ./gradlew buildEnvironment.
Since I am using only one buildscript configuration here, I think your decycle configuration has no effect. And indeed two versions of jquery exist on the classpath while running plugins, hence the error.
I am not sure if the solution is to change the decycle code-base, but if it is, my first guess towards a solution is to request specific versions (those defined in gradle.properties) of resources at https://github.com/obecker/decycle/blob/master/lib/src/main/java/de/obqo/decycle/report/ResourcesExtractor.java#L29-L37.

Edit: alternatively, a solution would be to automatically retrieve the latest (backwards compatible) version of a webjar resource, but I am not sure whether that is possible with webjars-locator-core.

Edit2: I could do a PR for the first solution (requesting specific versions), if you agree with that solution.

[Meijuh]

As you can see, I implemented the first solution, which solves the problem. What do you think?

Edit: I have been thinking a bit more about the solution I provided and I am reasonably okay with it. This is because I believe you do not have full control over what is on your classpath. E.g., this could fail already I believe CLASSPATH="/path/to/webjar-jquery-3.5.1.jar" ./gradlew test for both the minimal example (without checker framework) and decycle itself this fails (I have not tried executing this commandline as I am not at my PC rn). Being explicit about the versions you require is quite okay imo.

[obecker]

Thanks a lot for your contribution. I really appreciate it.
While decycle does not change gradle's build environment (apart from the small plugin glue code), the checkerframework plugin apparently is doing this. I wonder if I should raise an issue there ...

However, changing decycle to look for a specific version (your first solution) is IMO the right way to go. However, the PR is not fully working yet, because the requested path is copied as is into the target directory (and then cannot be found by the HTML report). I will use your PR and do some adjustments.

[obecker]

I have decided to try finding the assets without version and then handle the exception. This is probably also more error-safe if the lib artifact is used directly by some other project which overrides the versions of the webjars.

[Meijuh]

Looks great! I've tested the current master branch on both the project I raised this issue for as well as the minimal example I provided. Both seem to work, as well as the HTML report (which I failed to check as part of my PR).
Would be great to see a 0.10.0 release soon :).

[obecker]

@Meijuh 0.10.0 is out - thanks for your support! 😃