IssueTracker

Thank you for your feedback. Team may reach out for more feedback in reproducing or triaging this issue.

Could you try AGP 3.3.0-rc01 or 3.4.0-alpha06 and see if it fixes the issue?

If not, could you provide a sample project (as the error message above is not enough for us to debug the issue)?

FYI there's a reddit comment that says this is still a problem in the 3.3 RC:
https://www.reddit.com/r/androiddev/comments/a3qjsn/android_studio_33_release_candidate_2_available/eb8lhs9

(Note that the comment mentions using Kotlin as well. And this bug report references "kotterknife" which I'm guessing is Kotlinified butterknife.

KotterKnife is just using property delegation. Use your first company's
product to find out what it is exactly (i.e. Google search).

On Fri, Dec 7, 2018, 10:19 PM <buganizer-system@google.com> wrote:

Gradle has improved the error message to indicate exactly what transform has failed (https://github.com/gradle/gradle/issues/7950).

Their fix is scheduled for Gradle 5.1-rc-01 (not available as of today), but you can grab their latest builds at https://services.gradle.org/distributions-snapshots/.

Could you update the Gradle wrapper file to use the latest Gradle snapshot (e.g., https://services.gradle.org/distributions-snapshots/gradle-5.1-20181210080012+0000-bin.zip) and attach the new stack trace here?

Using Gradle 5.1, I have this stack trace for you.  It looks like it's related to Robolectric.

* What went wrong:
Execution failed for task ':app:compileDebugUnitTestKotlin'.
> Could not resolve all artifacts for configuration ':app:debugUnitTestCompileClasspath'.
   > Failed to transform artifact 'shadows-supportv4.jar (org.robolectric:shadows-supportv4:4.1-beta-2)' to match attributes {artifactType=android-classes, org.gradle.usage=java-runtime-jars}
      > Execution failed for JetifyTransform: /root/.gradle/caches/modules-2/files-2.1/org.robolectric/shadows-supportv4/4.1-beta-2/e9fc77525a70f7db75ea05d1c769dd2d49e61b77/shadows-supportv4-4.1-beta-2.jar.
         > Failed to transform '/root/.gradle/caches/modules-2/files-2.1/org.robolectric/shadows-supportv4/4.1-beta-2/e9fc77525a70f7db75ea05d1c769dd2d49e61b77/shadows-supportv4-4.1-beta-2.jar' using Jetifier. Reason: The given artifact contains a string literal with a package reference 'android.support.v4.content' that cannot be safely rewritten. Libraries using reflection such as annotation processors need to be updated manually to add support for androidx.. (Run with --stacktrace for more details.)

* 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 ':app:compileDebugUnitTestKotlin'.
        at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:38)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:67)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:49)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:315)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:305)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
        at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:49)
        at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:43)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:129)
        at org.gradle.execution.plan.DefaultPlanExecutor.process(DefaultPlanExecutor.java:74)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.executeWithServices(DefaultTaskExecutionGraph.java:178)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.execute(DefaultTaskExecutionGraph.java:154)
        at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:41)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:40)
        at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:24)
        at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:46)
        at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:49)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:40)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:33)
        at org.gradle.initialization.DefaultGradleLauncher$ExecuteTasks.run(DefaultGradleLauncher.java:383)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:301)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:293)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at org.gradle.initialization.DefaultGradleLauncher.runTasks(DefaultGradleLauncher.java:247)
        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:159)
        at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:134)
        at org.gradle.internal.invocation.GradleBuildController$1.execute(GradleBuildController.java:58)
        at org.gradle.internal.invocation.GradleBuildController$1.execute(GradleBuildController.java:55)
        at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:82)
        at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:75)
        at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:183)
        at org.gradle.internal.work.StopShieldingWorkerLeaseService.withLocks(StopShieldingWorkerLeaseService.java:40)
        at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:75)
        at org.gradle.internal.invocation.GradleBuildController.run(GradleBuildController.java:55)
        at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:31)
        at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
        at org.gradle.launcher.exec.BuildOutcomeReportingBuildActionRunner.run(BuildOutcomeReportingBuildActionRunner.java:58)
        at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32)
        at org.gradle.launcher.exec.BuildCompletionNotifyingBuildActionRunner.run(BuildCompletionNotifyingBuildActionRunner.java:39)
        at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$3.call(RunAsBuildOperationBuildActionRunner.java:49)
        at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$3.call(RunAsBuildOperationBuildActionRunner.java:44)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:315)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:305)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
        at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:44)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:49)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:46)
        at org.gradle.composite.internal.DefaultRootBuildState.run(DefaultRootBuildState.java:78)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:46)
        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:31)
        at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:42)
        at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:28)
        at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:78)
        at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:52)
        at org.gradle.tooling.internal.provider.SubscribableBuildActionExecuter.execute(SubscribableBuildActionExecuter.java:59)
        at org.gradle.tooling.internal.provider.SubscribableBuildActionExecuter.execute(SubscribableBuildActionExecuter.java:36)
        at org.gradle.tooling.internal.provider.SessionScopeBuildActionExecuter.execute(SessionScopeBuildActionExecuter.java:68)
        at org.gradle.tooling.internal.provider.SessionScopeBuildActionExecuter.execute(SessionScopeBuildActionExecuter.java:38)
        at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:37)
        at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:26)
        at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:43)
        at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:29)
        at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:60)
        at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:32)
        at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:55)
        at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:41)
        at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:48)
        at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:32)
        at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:55)
        at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:207)
        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:403)
        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:376)
        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:37)
        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:23)
        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:369)
        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:299)
        at org.gradle.launcher.Main.doAction(Main.java:36)
        at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
        at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:60)
        at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:37)
        at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
        at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:31)
        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:108)
        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
Caused by: org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all artifacts for configuration ':app:debugUnitTestCompileClasspath'.
        at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.rethrowFailure(DefaultConfiguration.java:1175)
        at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.access$2100(DefaultConfiguration.java:135)
        at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration$ConfigurationArtifactCollection.ensureResolved(DefaultConfiguration.java:1630)
        at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration$ConfigurationArtifactCollection.getArtifacts(DefaultConfiguration.java:1602)
        at com.android.build.gradle.internal.dependency.ArtifactCollectionWithExtraArtifact.getArtifacts(ArtifactCollectionWithExtraArtifact.java:119)
        at com.android.build.gradle.internal.dependency.ArtifactCollectionWithExtraArtifact.getArtifacts(ArtifactCollectionWithExtraArtifact.java:119)
        at com.android.build.gradle.internal.dependency.ArtifactCollectionWithExtraArtifact.iterator(ArtifactCollectionWithExtraArtifact.java:133)
        at org.jetbrains.kotlin.gradle.plugin.Android25ProjectHandler$wireKotlinTasks$2.invoke(Android25ProjectHandler.kt:204)
        at org.jetbrains.kotlin.gradle.plugin.Android25ProjectHandler$wireKotlinTasks$2.invoke(Android25ProjectHandler.kt:20)
        at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
        at org.jetbrains.kotlin.gradle.tasks.KotlinCompile.setupCompilerArgs(Tasks.kt:360)
        at org.jetbrains.kotlin.gradle.tasks.KotlinCompile.setupCompilerArgs(Tasks.kt:309)
        at org.jetbrains.kotlin.gradle.internal.CompilerArgumentAware$DefaultImpls.setupCompilerArgs$default(CompilerArgumentAware.kt:37)
        at org.jetbrains.kotlin.gradle.internal.CompilerArgumentAwareKt.prepareCompilerArguments(CompilerArgumentAware.kt:41)
        at org.jetbrains.kotlin.gradle.internal.CompilerArgumentAware$DefaultImpls.getFilteredArgumentsMap(CompilerArgumentAware.kt:34)
        at org.jetbrains.kotlin.gradle.internal.CompilerArgumentAwareWithInput$DefaultImpls.getFilteredArgumentsMap(CompilerArgumentAware.kt:54)
        at org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompileTool.getFilteredArgumentsMap(Tasks.kt:50)
        at org.jetbrains.kotlin.gradle.tasks.KotlinCompile_Decorated.getFilteredArgumentsMap(Unknown Source)
        at org.gradle.api.internal.tasks.properties.bean.AbstractNestedRuntimeBeanNode$DefaultPropertyValue$1$1.create(AbstractNestedRuntimeBeanNode.java:82)
        at org.gradle.util.SingleMessageLogger.whileDisabled(SingleMessageLogger.java:341)
        at org.gradle.api.internal.tasks.properties.bean.AbstractNestedRuntimeBeanNode$DefaultPropertyValue$1.get(AbstractNestedRuntimeBeanNode.java:79)
        at com.google.common.base.Suppliers$NonSerializableMemoizingSupplier.get(Suppliers.java:167)
        at org.gradle.api.internal.tasks.properties.bean.AbstractNestedRuntimeBeanNode$DefaultPropertyValue.getValue(AbstractNestedRuntimeBeanNode.java:145)
        at org.gradle.api.internal.tasks.properties.bean.AbstractNestedRuntimeBeanNode$DefaultPropertyValue.validate(AbstractNestedRuntimeBeanNode.java:163)
        at org.gradle.api.internal.tasks.DefaultTaskInputPropertySpec.validate(DefaultTaskInputPropertySpec.java:68)
        at org.gradle.api.internal.tasks.execution.DefaultTaskProperties.validate(DefaultTaskProperties.java:197)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:49)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:116)
        at org.gradle.api.internal.tasks.execution.ResolvePreviousStateExecuter.execute(ResolvePreviousStateExecuter.java:43)
        at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:93)
        at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:45)
        at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:94)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:56)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:55)
        at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
        ... 98 more
Caused by: org.gradle.api.artifacts.transform.ArtifactTransformException: Failed to transform artifact 'shadows-supportv4.jar (org.robolectric:shadows-supportv4:4.1-beta-2)' to match attributes {artifactType=android-classes, org.gradle.usage=java-runtime-jars}
        at org.gradle.api.internal.artifacts.transform.TransformingArtifactVisitor.visitArtifact(TransformingArtifactVisitor.java:53)
        at org.gradle.api.internal.artifacts.ivyservice.resolveengine.artifact.ArtifactBackedResolvedVariant$SingleArtifactSet.visit(ArtifactBackedResolvedVariant.java:112)
        at org.gradle.api.internal.artifacts.transform.TransformCompletion.visit(TransformCompletion.java:42)
        at org.gradle.api.internal.artifacts.ivyservice.resolveengine.artifact.CompositeResolvedArtifactSet$CompositeResult.visit(CompositeResolvedArtifactSet.java:83)
        at org.gradle.api.internal.artifacts.ivyservice.resolveengine.artifact.ParallelResolveArtifactSet$VisitingSet.visit(ParallelResolveArtifactSet.java:64)
        at org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration.visitArtifacts(DefaultLenientConfiguration.java:256)
        at org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration.access$500(DefaultLenientConfiguration.java:69)
        at org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$2.run(DefaultLenientConfiguration.java:231)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:301)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:293)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration.visitArtifactsWithBuildOperation(DefaultLenientConfiguration.java:228)
        at org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration.access$200(DefaultLenientConfiguration.java:69)
        at org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$1.visitArtifacts(DefaultLenientConfiguration.java:133)
        at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration$ConfigurationArtifactCollection.ensureResolved(DefaultConfiguration.java:1624)
        ... 130 more
Caused by: org.gradle.internal.execution.ExecutionException: Execution failed for JetifyTransform: /root/.gradle/caches/modules-2/files-2.1/org.robolectric/shadows-supportv4/4.1-beta-2/e9fc77525a70f7db75ea05d1c769dd2d49e61b77/shadows-supportv4-4.1-beta-2.jar.
        at org.gradle.internal.execution.impl.steps.CatchExceptionStep.execute(CatchExceptionStep.java:35)
        at org.gradle.internal.execution.impl.steps.CreateOutputsStep.execute(CreateOutputsStep.java:50)
        at org.gradle.internal.execution.impl.steps.SnapshotOutputStep.execute(SnapshotOutputStep.java:43)
        at org.gradle.internal.execution.impl.steps.SnapshotOutputStep.execute(SnapshotOutputStep.java:29)
        at org.gradle.internal.execution.impl.steps.CacheStep.executeWithoutCache(CacheStep.java:134)
        at org.gradle.internal.execution.impl.steps.CacheStep.lambda$execute$3(CacheStep.java:83)
        at org.gradle.internal.execution.impl.steps.CacheStep.execute(CacheStep.java:82)
        at org.gradle.internal.execution.impl.steps.CacheStep.execute(CacheStep.java:36)
        at org.gradle.internal.execution.impl.steps.PrepareCachingStep.execute(PrepareCachingStep.java:33)
        at org.gradle.internal.execution.impl.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:38)
        at org.gradle.internal.execution.impl.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:23)
        at org.gradle.internal.execution.impl.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:96)
        at org.gradle.internal.execution.impl.steps.SkipUpToDateStep.lambda$execute$1(SkipUpToDateStep.java:91)
        at org.gradle.internal.execution.impl.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:91)
        at org.gradle.internal.execution.impl.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:36)
        at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:34)
        at org.gradle.api.internal.artifacts.transform.DefaultTransformerInvoker.lambda$invoke$0(DefaultTransformerInvoker.java:131)
        at org.gradle.api.internal.artifacts.transform.DefaultTransformerInvoker.fireTransformListeners(DefaultTransformerInvoker.java:179)
        at org.gradle.api.internal.artifacts.transform.DefaultTransformerInvoker.lambda$invoke$1(DefaultTransformerInvoker.java:116)
        at org.gradle.api.internal.artifacts.transform.ImmutableTransformationWorkspaceProvider.lambda$withWorkspace$0(ImmutableTransformationWorkspaceProvider.java:81)
        at org.gradle.cache.internal.LockOnDemandCrossProcessCacheAccess.withFileLock(LockOnDemandCrossProcessCacheAccess.java:90)
        at org.gradle.cache.internal.DefaultCacheAccess.withFileLock(DefaultCacheAccess.java:194)
        at org.gradle.cache.internal.DefaultPersistentDirectoryStore.withFileLock(DefaultPersistentDirectoryStore.java:170)
        at org.gradle.cache.internal.DefaultCacheFactory$ReferenceTrackingCache.withFileLock(DefaultCacheFactory.java:194)
        at org.gradle.api.internal.artifacts.transform.ImmutableTransformationWorkspaceProvider.withWorkspace(ImmutableTransformationWorkspaceProvider.java:76)
        at org.gradle.api.internal.artifacts.transform.AbstractCachingTransformationWorkspaceProvider.lambda$withWorkspace$0(AbstractCachingTransformationWorkspaceProvider.java:54)
        at com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4717)
        at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3444)
        at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2193)
        at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2152)
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2042)
        at com.google.common.cache.LocalCache.get(LocalCache.java:3850)
        at com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4712)
        at org.gradle.api.internal.artifacts.transform.AbstractCachingTransformationWorkspaceProvider.withWorkspace(AbstractCachingTransformationWorkspaceProvider.java:53)
        at org.gradle.api.internal.artifacts.transform.DefaultTransformerInvoker.invoke(DefaultTransformerInvoker.java:115)
        at org.gradle.api.internal.artifacts.transform.TransformationStep.lambda$transform$1(TransformationStep.java:69)
        at org.gradle.api.internal.artifacts.transform.TransformationStep.transform(TransformationStep.java:66)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$InitialTransformationNode$1.transform(TransformationNode.java:139)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ArtifactTransformationStepBuildOperation.call(TransformationNode.java:212)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ArtifactTransformationStepBuildOperation.call(TransformationNode.java:195)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:315)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:305)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:175)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$InitialTransformationNode.execute(TransformationNode.java:125)
        at org.gradle.api.internal.artifacts.transform.TransformationNodeExecutor.execute(TransformationNodeExecutor.java:37)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:129)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
Caused by: java.lang.RuntimeException: Failed to transform '/root/.gradle/caches/modules-2/files-2.1/org.robolectric/shadows-supportv4/4.1-beta-2/e9fc77525a70f7db75ea05d1c769dd2d49e61b77/shadows-supportv4-4.1-beta-2.jar' using Jetifier. Reason: The given artifact contains a string literal with a package reference 'android.support.v4.content' that cannot be safely rewritten. Libraries using reflection such as annotation processors need to be updated manually to add support for androidx.. (Run with --stacktrace for more details.)
        at com.android.build.gradle.internal.dependency.JetifyTransform.transform(JetifyTransform.kt:243)
        at org.gradle.api.internal.artifacts.transform.DefaultTransformer.transform(DefaultTransformer.java:76)
        at org.gradle.api.internal.artifacts.transform.DefaultTransformerInvoker$TransformerExecution.execute(DefaultTransformerInvoker.java:248)
        at org.gradle.internal.execution.impl.steps.ExecuteStep.execute(ExecuteStep.java:49)
        at org.gradle.internal.execution.impl.steps.CancelExecutionStep.execute(CancelExecutionStep.java:34)
        at org.gradle.internal.execution.impl.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:69)
        at org.gradle.internal.execution.impl.steps.TimeoutStep.execute(TimeoutStep.java:49)
        at org.gradle.internal.execution.impl.steps.CatchExceptionStep.execute(CatchExceptionStep.java:33)
        ... 58 more
Caused by: java.lang.IllegalArgumentException: The given artifact contains a string literal with a package reference 'android.support.v4.content' that cannot be safely rewritten. Libraries using reflection such as annotation processors need to be updated manually to add support for androidx.
        at com.android.tools.build.jetifier.processor.transform.bytecode.CoreRemapperImpl.rewriteString(CoreRemapperImpl.kt:91)
        at com.android.tools.build.jetifier.processor.transform.bytecode.asm.CustomRemapper.mapValue(CustomRemapper.kt:75)
        at org.objectweb.asm.commons.MethodRemapper.visitLdcInsn(MethodRemapper.java:218)
        at org.objectweb.asm.ClassReader.readCode(ClassReader.java:2183)
        at org.objectweb.asm.ClassReader.readMethod(ClassReader.java:1274)
        at org.objectweb.asm.ClassReader.accept(ClassReader.java:679)
        at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
        at com.android.tools.build.jetifier.processor.transform.bytecode.ByteCodeTransformer.runTransform(ByteCodeTransformer.kt:39)
        at com.android.tools.build.jetifier.processor.Processor.visit(Processor.kt:366)
        at com.android.tools.build.jetifier.processor.archive.ArchiveFile.accept(ArchiveFile.kt:41)
        at com.android.tools.build.jetifier.processor.Processor.visit(Processor.kt:348)
        at com.android.tools.build.jetifier.processor.archive.Archive.accept(Archive.kt:70)
        at com.android.tools.build.jetifier.processor.Processor.transformLibrary(Processor.kt:344)
        at com.android.tools.build.jetifier.processor.Processor.transform(Processor.kt:207)
        at com.android.build.gradle.internal.dependency.JetifyTransform.transform(JetifyTransform.kt:238)
        ... 65 more

Great, thank you for the stack trace!

In general, for a library X that fails with this error message, it means that either
        (1) Library X does not support AndroidX, and Jetifier is unable to jetify it (not all libraries can be jetified, for reasons explained in the error message---for more context, see Issue 116745353); or
        (2) Library X already supports AndroidX (or does not use support libraries/AndroidX at all), but Jetifier still attempts to jetify it, and then fails.

For case (1), the library's author will have to update their library manually to support AndroidX, as it cannot be converted automatically by Jetifier. Someone should file a bug for the library to let them know.

For case (2), this is a known issue by the AGP/Jetifier, tracked at Issue 119135578. We are currently working on a solution and have posted a workaround using a blacklist at comment #5 of that bug.


For the case at comment #8 above, Jetifier fails with org.robolectric:shadows-supportv4:4.1-beta-2. I'm suspecting it falls into case (1), but just to double-check, could you add this property to your gradle.properties file and see if you can build and run your app successfully:

        android.jetifier.blacklist = shadows-supportv4

(If it doesn't work, case (1) is confirmed; however, if it does work, then case (2) is confirmed.)


For others, you may see that Jetifier is failing for a different library. Please use the info above to debug and let us know what library is blocking you. Thanks!

I have an additional issue probably related to this. Since I have update my project to use AndroidX we cannot run tests on Android Studio. investigating I found out that the "test" command executes a series of tasks which are failing with a "Transformation hasn't been executed yet". gradle fails when executing ":app:generatePRODDebugSources :app:compilePRODDebugSources" (note that if I run the tasks independently, they run fine).

executing "gradlew :app:generatePRODDebugSources :app:compilePRODDebugSources --stacktrace" this is what it returns:

=== STACKTRACE ===

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* What went wrong:
Transformation hasn't been executed yet

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

* Exception is:
java.lang.IllegalStateException: Transformation hasn't been executed yet
        at org.gradle.api.internal.artifacts.transform.TransformationNode.getTransformedSubject(TransformationNode.java:66)
        at org.gradle.api.internal.artifacts.transform.TransformationNode.access$400(TransformationNode.java:38)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ChainedTransformationNode$1.describeSubject(TransformationNode.java:181)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ArtifactTransformationStepBuildOperation.description(TransformationNode.java:200)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:151)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ChainedTransformationNode.execute(TransformationNode.java:169)
        at org.gradle.api.internal.artifacts.transform.TransformationNodeExecutor.execute(TransformationNodeExecutor.java:37)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:129)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)

==============================================================================

2: Task failed with an exception.
-----------
* What went wrong:
Transformation hasn't been executed yet

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

* Exception is:
java.lang.IllegalStateException: Transformation hasn't been executed yet
        at org.gradle.api.internal.artifacts.transform.TransformationNode.getTransformedSubject(TransformationNode.java:66)
        at org.gradle.api.internal.artifacts.transform.TransformationNode.access$400(TransformationNode.java:38)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ChainedTransformationNode$1.describeSubject(TransformationNode.java:181)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ArtifactTransformationStepBuildOperation.description(TransformationNode.java:200)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:151)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:101)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
        at org.gradle.api.internal.artifacts.transform.TransformationNode$ChainedTransformationNode.execute(TransformationNode.java:169)
        at org.gradle.api.internal.artifacts.transform.TransformationNodeExecutor.execute(TransformationNodeExecutor.java:37)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
        at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193)
        at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:129)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
        at java.lang.Thread.run(Thread.java:748)

=== END STACKTRACE ===

I am running AGP 3.3.0-rc03, with gradle 5.1 (same problem using the 5.2 nightly version). The stacktrace is useless and I dont have any idea how to get more information. Also I do not see anything related to Jetifier, apart the fact that reverting my code to pre-AndroidX those tasks work fine. Let me know if I can help with more informations

Thanks for the info. We will need a more useful stack trace to debug this issue.

It appears that this Gradle bug https://github.com/gradle/gradle/issues/7950 is not completely fixed in Gradle 5.1. I've left a comment in that bug, please feel free to provide more info or ideally a reproducible project there.

Ok thanks. I will try to create a reproducible project and post there. If you want I can privately provide you the output if I run the tasks with a --debug flag. Anyway I had a look at that I did not find anything interesting about any errors.

Just to add more infos to the issue above, even if this is probably meaningless, I see those errors from JetifyTransform when running the assemble task:

> Transform wagon-http-lightweight.jar (org.apache.maven.wagon:wagon-http-lightweight:1.0-beta-6) with JetifyTransform
ERROR: [TAG] Failed to resolve variable '${pom.groupId}'
ERROR: [TAG] Failed to resolve variable '${pom.version}'

> Transform error_prone_annotations.jar (com.google.errorprone:error_prone_annotations:2.3.1) with JetifyTransform
ERROR: [TAG] Failed to resolve variable '${junit.version}'

Transform retrofit-mock.jar (com.squareup.retrofit2:retrofit-mock:2.5.0) with JetifyTransform
ERROR: [TAG] Failed to resolve variable '${project.groupId}'
ERROR: [TAG] Failed to resolve variable '${project.version}'

> Transform maven-ant-tasks.jar (org.apache.maven:maven-ant-tasks:2.1.3) with JetifyTransform
ERROR: [TAG] Failed to resolve variable '${pom.groupId}'
ERROR: [TAG] Failed to resolve variable '${pom.version}'

> Transform guava.jar (com.google.guava:guava:25.1-android) with JetifyTransform
ERROR: [TAG] Failed to resolve variable '${animal.sniffer.version}'

can this be related? Thanks

@#12: These error logs are thrown from Jetifier.

@Filip: Are these errors legitimate? Should we change them to warnings, and what can we/the users do to fix them?

These errors are not breaking the transformation. I think I should change them to warnings.

This occurs when jetifier is parsing a pom file of some dependency and fails to resolve a variable there. Since these are not related to migration they can be safely ignored.

In that case, I think warnings may still be too strong, especially when the users cannot do anything about it. Maybe they should show up only when the user runs with --debug?

I've filed Issue 122720498 to keep track of the fix.

Thanks!

I filed an issue with robolectric specific to agp 3.3.0 (didn't try agp 3.4.0 yet), and I think it might be this issue here. The robolectric issue: https://github.com/robolectric/robolectric/issues/4491

However, it's not warnings. This does indeed break the build and/or break tests. Details are in the robolectric issue. It has a sample app.

I believe this refers to the issue in the comment #8

It is indeed related to comment #8. Based on the information at https://github.com/robolectric/robolectric/issues/4491, robolectric will need to update its library to support AndroidX, as Jetifier is not able to jetify it (case (1) in comment #9 above).

Note that with AGP 3.2.1, Jetifier did not fail when jetifying the library, but with AGP 3.3.0+ it fails, because we have made Jetifier stricter (i.e., it jetifies a library only when it can guarantee correctness). See Issue 116745353 for more info.


The project discussed at comment #10-#12 has a different underlying issue, although it has the same error message "Transformation hasn't been executed yet". See https://github.com/gradle/gradle/issues/7950#issuecomment-454728517.

It seems that this issue now includes multiple sub-issues that make it hard to keep track. I am resolving this and summarize what has been fixed and not fixed below, please file new bugs with us if you still run into issues:

@1-7: Error message improved in Gradle (https://github.com/gradle/gradle/issues/7950). To fix the root cause, please file a new bug with us using Gradle 5.1.1+.

@8, 9, 18-20: Issue tracked at https://github.com/robolectric/robolectric/issues/4491

@10, 11: Fixed in Gradle 5.2-rc-1: https://github.com/gradle/gradle/issues/8250, https://github.com/gradle/gradle/issues/8253

@12-17: Filed separate bug at Issue 122720498