Error when running with configuration cache disabled

I'm using Gradle 9.5.1 with Spotless 8.4.0.
While trying to reproduce #2926, I tried running Spotless w/o configuration cache. That causes an error unfortunately:

```
$ ./gradlew --no-configuration-cache sC --stacktrace
> Task :spotlessGroovy FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':spotlessGroovy' (registered in build file 'build.gradle').
> If the initializer was null, then one of roundtripStateInternal or equalityStateInternal should be non-null, and neither was

* Try:
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights from a Build Scan (powered by Develocity).
> Get more help at https://help.gradle.org.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':spotlessGroovy' (registered in build file 'build.gradle').
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:38)
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:210)
at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:205)
at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:67)
at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:60)
at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:167)
at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:60)
at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:54)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
at org.gradle.execution.plan.DefaultNodeExecutor.executeLocalTaskNode(DefaultNodeExecutor.java:55)
at org.gradle.execution.plan.DefaultNodeExecutor.execute(DefaultNodeExecutor.java:34)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.lambda$execute$0(DefaultTaskExecutionGraph.java:339)
at org.gradle.internal.operations.CurrentBuildOperationRef.with(CurrentBuildOperationRef.java:84)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:339)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:328)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:459)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:376)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
at org.gradle.internal.concurrent.AbstractManagedExecutor$1.run(AbstractManagedExecutor.java:47)
Caused by: java.lang.IllegalStateException: If the initializer was null, then one of roundtripStateInternal or equalityStateInternal should be non-null, and neither was
at com.diffplug.spotless.FormatterStepSerializationRoundtrip.writeObject(FormatterStepSerializationRoundtrip.java:74)
at com.diffplug.spotless.FormatterStepSerializationRoundtrip$HackClone.writeObject(FormatterStepSerializationRoundtrip.java:121)
at com.diffplug.spotless.ConfigurationCacheHackList.writeObject(ConfigurationCacheHackList.java:78)
at com.diffplug.spotless.LazyForwardingEquality.toBytes(LazyForwardingEquality.java:110)
at com.diffplug.spotless.FormatterStepEqualityOnStateSerialization.lambda$serializedState$0(FormatterStepEqualityOnStateSerialization.java:95)
at com.diffplug.spotless.ThrowingEx.get(ThrowingEx.java:67)
at com.diffplug.spotless.FormatterStepEqualityOnStateSerialization.serializedState(FormatterStepEqualityOnStateSerialization.java:95)
at com.diffplug.spotless.FormatterStepEqualityOnStateSerialization.hashCode(FormatterStepEqualityOnStateSerialization.java:75)
at com.diffplug.spotless.FormatterStepSerializationRoundtrip$HackClone.hashCode(FormatterStepSerializationRoundtrip.java:142)
at com.diffplug.spotless.ConfigurationCacheHackList.hashCode(ConfigurationCacheHackList.java:151)
at org.gradle.internal.execution.impl.DefaultInputFingerprinter$InputCollectingVisitor.visitInputProperty(DefaultInputFingerprinter.java:131)
at org.gradle.api.internal.tasks.execution.TaskExecution.visitMutableInputs(TaskExecution.java:336)
at org.gradle.internal.execution.impl.DefaultInputFingerprinter.fingerprintInputProperties(DefaultInputFingerprinter.java:77)
at org.gradle.internal.execution.steps.CaptureMutableStateBeforeExecutionStep.captureExecutionStateWithOutputs(CaptureMutableStateBeforeExecutionStep.java:124)
at org.gradle.internal.execution.steps.CaptureMutableStateBeforeExecutionStep.lambda$captureExecutionState$0(CaptureMutableStateBeforeExecutionStep.java:94)
at org.gradle.internal.execution.steps.BuildOperationStep$1.call(BuildOperationStep.java:38)
at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:210)
at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:205)
at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:67)
at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:60)
at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:167)
at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:60)
at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:54)
at org.gradle.internal.execution.steps.BuildOperationStep.operation(BuildOperationStep.java:35)
at org.gradle.internal.execution.steps.CaptureMutableStateBeforeExecutionStep.captureExecutionState(CaptureMutableStateBeforeExecutionStep.java:92)
at org.gradle.internal.execution.steps.CaptureMutableStateBeforeExecutionStep.executeMutable(CaptureMutableStateBeforeExecutionStep.java:73)
at org.gradle.internal.execution.steps.CaptureMutableStateBeforeExecutionStep.execute(CaptureMutableStateBeforeExecutionStep.java:65)
at org.gradle.internal.execution.steps.CaptureMutableStateBeforeExecutionStep.execute(CaptureMutableStateBeforeExecutionStep.java:45)
at org.gradle.internal.execution.steps.SkipEmptyMutableWorkStep.executeWithNonEmptySources(SkipEmptyMutableWorkStep.java:210)
at org.gradle.internal.execution.steps.SkipEmptyMutableWorkStep.executeMutable(SkipEmptyMutableWorkStep.java:85)
at org.gradle.internal.execution.steps.SkipEmptyMutableWorkStep.executeMutable(SkipEmptyMutableWorkStep.java:53)
at org.gradle.internal.execution.steps.MutableStep.execute(MutableStep.java:26)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:38)
at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.executeMutable(LoadPreviousExecutionStateStep.java:36)
at org.gradle.internal.execution.steps.LoadPreviousExecutionStateStep.executeMutable(LoadPreviousExecutionStateStep.java:23)
at org.gradle.internal.execution.steps.MutableStep.execute(MutableStep.java:26)
at org.gradle.internal.execution.steps.HandleStaleOutputsStep.executeMutable(HandleStaleOutputsStep.java:77)
at org.gradle.internal.execution.steps.HandleStaleOutputsStep.executeMutable(HandleStaleOutputsStep.java:43)
at org.gradle.internal.execution.steps.MutableStep.execute(MutableStep.java:26)
at org.gradle.internal.execution.steps.AssignMutableWorkspaceStep.lambda$executeMutable$0(AssignMutableWorkspaceStep.java:34)
at org.gradle.api.internal.tasks.execution.TaskExecution$4.withWorkspace(TaskExecution.java:305)
at org.gradle.internal.execution.steps.AssignMutableWorkspaceStep.executeMutable(AssignMutableWorkspaceStep.java:30)
at org.gradle.internal.execution.steps.AssignMutableWorkspaceStep.executeMutable(AssignMutableWorkspaceStep.java:21)
at org.gradle.internal.execution.steps.MutableStep.execute(MutableStep.java:26)
at org.gradle.internal.execution.steps.ChoosePipelineStep.execute(ChoosePipelineStep.java:40)
at org.gradle.internal.execution.steps.ChoosePipelineStep.execute(ChoosePipelineStep.java:23)
at org.gradle.internal.execution.steps.ExecuteWorkBuildOperationFiringStep.lambda$execute$2(ExecuteWorkBuildOperationFiringStep.java:67)
at org.gradle.internal.execution.steps.ExecuteWorkBuildOperationFiringStep.execute(ExecuteWorkBuildOperationFiringStep.java:67)
at org.gradle.internal.execution.steps.ExecuteWorkBuildOperationFiringStep.execute(ExecuteWorkBuildOperationFiringStep.java:39)
at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:46)
at org.gradle.internal.execution.steps.IdentityCacheStep.execute(IdentityCacheStep.java:34)
at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:56)
at org.gradle.internal.execution.steps.IdentifyStep.execute(IdentifyStep.java:38)
at org.gradle.internal.execution.impl.DefaultExecutionEngine$1.execute(DefaultExecutionEngine.java:68)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:132)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:121)
at org.gradle.api.internal.tasks.execution.ProblemsTaskPathTrackingTaskExecuter.execute(ProblemsTaskPathTrackingTaskExecuter.java:41)
at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:74)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
... 23 more

BUILD FAILED in 5s

Inizia riproducendo il fallimento con Gradle 9.5.1, Spotless 8.4.0 e `./gradlew --no-configuration-cache sC --stacktrace`. Leggi `FormatterStepSerializationRoundtrip`, `ConfigurationCacheHackList` e `FormatterStepEqualityOnStateSerialization` nello stack trace; il lavoro è completato quando il comando non fallisce più con la cache di configurazione disabilitata.

Scritto dal modello di indicizzazione a partire dal testo della issue.