365連休

にわかのandroidとかの開発メモ。

Android Studio 4.2 BUILD FAILED compiler message file broken: key=compiler.misc.msg.bug arguments=11.0.8, {1}, {2}, {3}, {4}, {5}, {6}, {7} java.lang.NullPointerException

なんか急にBuildが通らなくなった。

compiler message file broken: key=compiler.misc.msg.bug arguments=11.0.8, {1}, {2}, {3}, {4}, {5}, {6}, {7}
java.lang.NullPointerException
	at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.isSubClass(Symbol.java:1308)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.accessClass(Lower.java:1078)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.accessSymbol(Lower.java:949)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.access(Lower.java:1190)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitSelect(Lower.java:3601)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2114)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2075)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.boxArgs(Lower.java:2834)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitNewClass(Lower.java:2552)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1689)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2075)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitVarDef(Lower.java:3295)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:956)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.visitBlock(TreeTranslator.java:167)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitBlock(Lower.java:3309)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1020)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.visitMethodDef(TreeTranslator.java:150)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitMethodDefInternal(Lower.java:2517)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitMethodDef(Lower.java:2429)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:866)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitClassDef(Lower.java:2202)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:774)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitNewClass(Lower.java:2590)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1689)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2075)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitVarDef(Lower.java:3295)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:956)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.visitBlock(TreeTranslator.java:167)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitBlock(Lower.java:3309)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1020)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.visitMethodDef(TreeTranslator.java:150)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitMethodDefInternal(Lower.java:2517)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitMethodDef(Lower.java:2429)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:866)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.visitClassDef(Lower.java:2202)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:774)
	at jdk.compiler/com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2064)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translate(Lower.java:2083)
	at jdk.compiler/com.sun.tools.javac.comp.Lower.translateTopLevelClass(Lower.java:3678)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1579)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1432)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:973)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:147)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
	at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
	at org.gradle.internal.compiler.java.IncrementalCompileTask.call(IncrementalCompileTask.java:77)
	at org.gradle.api.internal.tasks.compile.AnnotationProcessingCompileTask.call(AnnotationProcessingCompileTask.java:94)
	at org.gradle.api.internal.tasks.compile.ResourceCleaningCompilationTask.call(ResourceCleaningCompilationTask.java:57)
	at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:55)
	at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:40)
	at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:97)
	at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:51)
	at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:37)
	at org.gradle.api.internal.tasks.compile.AnnotationProcessorDiscoveringCompiler.execute(AnnotationProcessorDiscoveringCompiler.java:51)
	at org.gradle.api.internal.tasks.compile.AnnotationProcessorDiscoveringCompiler.execute(AnnotationProcessorDiscoveringCompiler.java:37)
	at org.gradle.api.internal.tasks.compile.ModuleApplicationNameWritingCompiler.execute(ModuleApplicationNameWritingCompiler.java:46)
	at org.gradle.api.internal.tasks.compile.ModuleApplicationNameWritingCompiler.execute(ModuleApplicationNameWritingCompiler.java:36)
	at org.gradle.jvm.toolchain.internal.DefaultToolchainJavaCompiler.execute(DefaultToolchainJavaCompiler.java:57)
	at org.gradle.api.tasks.compile.JavaCompile.lambda$createToolchainCompiler$1(JavaCompile.java:251)
	at org.gradle.api.internal.tasks.compile.CleaningJavaCompiler.execute(CleaningJavaCompiler.java:53)
	at org.gradle.api.internal.tasks.compile.incremental.IncrementalCompilerFactory.lambda$createRebuildAllCompiler$0(IncrementalCompilerFactory.java:98)
	at org.gradle.api.internal.tasks.compile.incremental.IncrementalResultStoringCompiler.execute(IncrementalResultStoringCompiler.java:61)
	at org.gradle.api.internal.tasks.compile.incremental.IncrementalResultStoringCompiler.execute(IncrementalResultStoringCompiler.java:45)
	at org.gradle.api.internal.tasks.compile.CompileJavaBuildOperationReportingCompiler$2.call(CompileJavaBuildOperationReportingCompiler.java:59)
	at org.gradle.api.internal.tasks.compile.CompileJavaBuildOperationReportingCompiler$2.call(CompileJavaBuildOperationReportingCompiler.java:51)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:200)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:195)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:75)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:153)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:62)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.lambda$call$2(DefaultBuildOperationExecutor.java:76)
	at org.gradle.internal.operations.UnmanagedBuildOperationWrapper.callWithUnmanagedSupport(UnmanagedBuildOperationWrapper.java:54)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:76)
	at org.gradle.api.internal.tasks.compile.CompileJavaBuildOperationReportingCompiler.execute(CompileJavaBuildOperationReportingCompiler.java:51)
	at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:300)
	at org.gradle.api.tasks.compile.JavaCompile.performIncrementalCompilation(JavaCompile.java:179)
	at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:152)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:104)
	at org.gradle.api.internal.project.taskfactory.IncrementalInputsTaskAction.doExecute(IncrementalInputsTaskAction.java:32)
	at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:51)
	at org.gradle.api.internal.project.taskfactory.AbstractIncrementalTaskAction.execute(AbstractIncrementalTaskAction.java:25)
	at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:29)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$2.run(ExecuteActionsTaskExecuter.java:498)
	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$3.execute(DefaultBuildOperationRunner.java:75)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:153)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:56)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.lambda$run$1(DefaultBuildOperationExecutor.java:71)
	at org.gradle.internal.operations.UnmanagedBuildOperationWrapper.runWithUnmanagedSupport(UnmanagedBuildOperationWrapper.java:45)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:71)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:483)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:466)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$300(ExecuteActionsTaskExecuter.java:105)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.executeWithPreviousOutputFiles(ExecuteActionsTaskExecuter.java:270)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:248)
	at org.gradle.internal.execution.steps.ExecuteStep.executeInternal(ExecuteStep.java:83)
	at org.gradle.internal.execution.steps.ExecuteStep.access$000(ExecuteStep.java:37)
	at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:50)
	at org.gradle.internal.execution.steps.ExecuteStep$1.call(ExecuteStep.java:47)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:200)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:195)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:75)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:153)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:62)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.lambda$call$2(DefaultBuildOperationExecutor.java:76)
	at org.gradle.internal.operations.UnmanagedBuildOperationWrapper.callWithUnmanagedSupport(UnmanagedBuildOperationWrapper.java:54)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:76)
	at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:47)
	at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:37)
	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.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:50)
	at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:36)
	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.execute(CaptureStateAfterExecutionStep.java:54)
	at org.gradle.internal.execution.steps.CaptureStateAfterExecutionStep.execute(CaptureStateAfterExecutionStep.java:35)
	at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:60)
	at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:27)
	at org.gradle.internal.execution.steps.BuildCacheStep.executeWithoutCache(BuildCacheStep.java:174)
	at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:74)
	at org.gradle.internal.execution.steps.BuildCacheStep.execute(BuildCacheStep.java:45)
	at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:40)
	at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:29)
	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:99)
	at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:92)
	at java.base/java.util.Optional.map(Optional.java:265)
	at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:52)
	at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:36)
	at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:84)
	at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:41)
	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:37)
	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:27)
	at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:91)
	at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:49)
	at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:78)
	at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:49)
	at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:105)
	at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:50)
	at org.gradle.internal.execution.steps.SkipEmptyWorkStep.lambda$execute$2(SkipEmptyWorkStep.java:86)
	at java.base/java.util.Optional.orElseGet(Optional.java:369)
	at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:86)
	at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:32)
	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:38)
	at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:43)
	at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:31)
	at org.gradle.internal.execution.steps.AssignWorkspaceStep.lambda$execute$0(AssignWorkspaceStep.java:40)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution$2.withWorkspace(ExecuteActionsTaskExecuter.java:283)
	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:49)
	at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:35)
	at org.gradle.internal.execution.impl.DefaultExecutionEngine$1.execute(DefaultExecutionEngine.java:76)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:184)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:173)
	at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:109)
	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:200)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:195)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:75)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:153)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:68)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:62)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.lambda$call$2(DefaultBuildOperationExecutor.java:76)
	at org.gradle.internal.operations.UnmanagedBuildOperationWrapper.callWithUnmanagedSupport(UnmanagedBuildOperationWrapper.java:54)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:76)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
	at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:74)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:408)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:395)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:388)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:374)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
	at java.base/java.lang.Thread.run(Thread.java:834)

 

 

環境

 

試したこと

  • × Clean Build -> Rebuild
  • × Invalidate Caches
  • × Gradle 7.0.2 -> 6.9
  • × Bundle JDK 11.0.8 -> Open JDK 11+28
  • × ".gradle"、".idea"、"app\gradle"をdelete

 

結局

大きめのインスタンスメソッド内(タブ深さ25段)で、

無名(匿名)クラスを生成し、

その無名クラスのインスタンスメソッドに

ローカルクラスとそのコンストラクタを書いた際に、

"無名クラスのprotected final field"を参照している所を、他の方法でアクセスする様に変更するとビルドが成功するようになった。

変更は1行のみである。

 

無名クラスのコンストラクタで初期化されるフィールドへ、無名クラス内のローカルクラスのコンストラクからアクセスするな!」ってことのような気もするが、再現可能なサンプルコードはどうしても作ることができなかった。

 

ちなみにそういったコードを書いてもAndroid Studioのエディタで、Lint警告されることは無いし、ビルドも通る。

    /** とある静的クラス */
    public static class X {
        protected final String a;
        public X(){
            this.a = "a";
        }
    }
    /** とあるインスタンスメソッド */
    public String hoge(){
        //無名クラス
        return new X(){
            @NonNull
            @Override
            public String toString() {
                //無名クラスのインスタンスメソッドに、とあるローカルクラスを定義
                class Y {
                    protected final String b;
                    public Y() {
                        super();
                        //ローカルクラスのcフィールドに、無名クラスのコンストラクタで初期化されるaフィールドを入れる
                        this.b = a; // (←_←)怪しい、だが問題無い
                    }
                }
                //深い意味はないが、ローカルクラスのメンバを返す
                return new Y().b;
            }
        }.toString();
    }

 

Javaの言語仕様か、コンパイラの仕様か、はたまたコンパイラが許容できないほど複雑すぎたのか。

 

 

今回、コンパイラが例外で落ちている(?)せいか、ビルドログから原因を辿ることができなかった。

 

ビルド失敗時、ビルドログの中にビルドオプションを変更してログを増やすリンクが付いているのでそれを利用するとデバッグに役立つことがあるかもしれない。今回は全く役に立たなかった。

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* 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.

* Get more help at https://help.gradle.org