Question Android IL2CPP build fails in 2021.2.0b15

Hello,

I am trying to make an Android IL2CPP Development build with ARM64 as the target architecture. The mono build works fine. Code stripping is not enabled and set to minimal.

The error I am getting is the following:

Spoiler: Error message

C:\Program Files\Unity\Hub\Editor\2021.2.0b15\Editor\Data\il2cpp\build\deploy\il2cpp.exe @Library\Bee\artifacts\rsp\11800186649846153120.rsp
Error: IL2CPP error for method 'T& System.Span`1::get_Item(System.Int32)' in assembly 'C:\Projects\Unity\Futuclass\futuclass\Futuclass\Library\Bee\artifacts\Android\ManagedStripped\System.Memory.dll'
System.InvalidOperationException: Sequence contains no matching element
at System.Linq.ThrowHelper.ThrowNoMatchException()
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Unity.IL2CPP.IntrinsicRemap.SpanGetItemArguments(ReadOnlyContext context, MethodReference callingMethod, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.IntrinsicRemap.GetCustomArguments(ReadOnlyContext context, MethodReference methodToCall, MethodReference callingMethod, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, IGeneratedMethodCodeWriter writer, MethodReference callingMethod, MethodReference unresolvedMethodToCall, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadataAccess, IReadOnlyList`1 argumentArray, Boolean useArrayBoundsCheck)
at Unity.IL2CPP.MethodWriter.<>c__DisplayClass7_0.<WriteAdjustorThunk>b__0(IGeneratedMethodCodeWriter bodyWriter, IRuntimeMetadataAccess metadataAccess)
at Unity.IL2CPP.CodeWriters.CodeWriterExtensions.WriteMethodWithMetadataInitialization(IGeneratedMethodCodeWriter writer, String methodSignature, Action`2 writeMethodBody, String uniqueIdentifier, MethodReference methodRef, Boolean writingMethodBody)
at Unity.IL2CPP.MethodWriter.WriteAdjustorThunk(MethodWriteContext context, IGeneratedMethodCodeWriter writer)
at Unity.IL2CPP.SourceWriter.WriteType(SourceWritingContext context, IGeneratedMethodCodeWriter writer, TypeReference type, NPath filePath, Boolean writeMarshalingDefinitions)
at Unity.IL2CPP.SourceWriters.SourceWriterBase`2.WriteItem(StreamWorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.Streams.FileLevelParallelStreamManager`3.WorkerWriteItemsToFile(WorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.PhaseWorkScheduler`1.WorkerLoop(Object data)
Error: IL2CPP error for method 'T& System.Span`1::get_Item(System.Int32)' in assembly 'C:\Projects\Unity\Futuclass\futuclass\Futuclass\Library\Bee\artifacts\Android\ManagedStripped\System.Memory.dll'
System.InvalidOperationException: Sequence contains no matching element
at System.Linq.ThrowHelper.ThrowNoMatchException()
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Unity.IL2CPP.IntrinsicRemap.SpanGetItemArguments(ReadOnlyContext context, MethodReference callingMethod, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.IntrinsicRemap.GetCustomArguments(ReadOnlyContext context, MethodReference methodToCall, MethodReference callingMethod, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, IGeneratedMethodCodeWriter writer, MethodReference callingMethod, MethodReference unresolvedMethodToCall, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadataAccess, IReadOnlyList`1 argumentArray, Boolean useArrayBoundsCheck)
at Unity.IL2CPP.MethodWriter.<>c__DisplayClass7_0.<WriteAdjustorThunk>b__0(IGeneratedMethodCodeWriter bodyWriter, IRuntimeMetadataAccess metadataAccess)
at Unity.IL2CPP.CodeWriters.CodeWriterExtensions.WriteMethodWithMetadataInitialization(IGeneratedMethodCodeWriter writer, String methodSignature, Action`2 writeMethodBody, String uniqueIdentifier, MethodReference methodRef, Boolean writingMethodBody)
at Unity.IL2CPP.MethodWriter.WriteAdjustorThunk(MethodWriteContext context, IGeneratedMethodCodeWriter writer)
at Unity.IL2CPP.SourceWriter.WriteType(SourceWritingContext context, IGeneratedMethodCodeWriter writer, TypeReference type, NPath filePath, Boolean writeMarshalingDefinitions)
at Unity.IL2CPP.SourceWriters.SourceWriterBase`2.WriteItem(StreamWorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.Streams.FileLevelParallelStreamManager`3.WorkerWriteItemsToFile(WorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.PhaseWorkScheduler`1.WorkerLoop(Object data)
Error: IL2CPP error for method 'T& modreq(System.Runtime.InteropServices.InAttribute) System.ReadOnlySpan`1::get_Item(System.Int32)' in assembly 'C:\Projects\Unity\Futuclass\futuclass\Futuclass\Library\Bee\artifacts\Android\ManagedStripped\System.Memory.dll'
System.InvalidOperationException: Sequence contains no matching element
at System.Linq.ThrowHelper.ThrowNoMatchException()
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Unity.IL2CPP.IntrinsicRemap.SpanGetItemArguments(ReadOnlyContext context, MethodReference callingMethod, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.IntrinsicRemap.GetCustomArguments(ReadOnlyContext context, MethodReference methodToCall, MethodReference callingMethod, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, IGeneratedMethodCodeWriter writer, MethodReference callingMethod, MethodReference unresolvedMethodToCall, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadataAccess, IReadOnlyList`1 argumentArray, Boolean useArrayBoundsCheck)
at Unity.IL2CPP.MethodWriter.<>c__DisplayClass7_0.<WriteAdjustorThunk>b__0(IGeneratedMethodCodeWriter bodyWriter, IRuntimeMetadataAccess metadataAccess)
at Unity.IL2CPP.CodeWriters.CodeWriterExtensions.WriteMethodWithMetadataInitialization(IGeneratedMethodCodeWriter writer, String methodSignature, Action`2 writeMethodBody, String uniqueIdentifier, MethodReference methodRef, Boolean writingMethodBody)
at Unity.IL2CPP.MethodWriter.WriteAdjustorThunk(MethodWriteContext context, IGeneratedMethodCodeWriter writer)
at Unity.IL2CPP.SourceWriter.WriteType(SourceWritingContext context, IGeneratedMethodCodeWriter writer, TypeReference type, NPath filePath, Boolean writeMarshalingDefinitions)
at Unity.IL2CPP.SourceWriters.SourceWriterBase`2.WriteItem(StreamWorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.Streams.FileLevelParallelStreamManager`3.WorkerWriteItemsToFile(WorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.PhaseWorkScheduler`1.WorkerLoop(Object data)
Error: IL2CPP error for type 'System.Char' in assembly 'C:\Projects\Unity\Futuclass\futuclass\Futuclass\Library\Bee\artifacts\Android\ManagedStripped\mscorlib.dll'
System.InvalidOperationException: Sequence contains no matching element
at System.Linq.ThrowHelper.ThrowNoMatchException()
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Unity.IL2CPP.IntrinsicRemap.SpanGetItemArguments(ReadOnlyContext context, MethodReference callingMethod, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.IntrinsicRemap.GetCustomArguments(ReadOnlyContext context, MethodReference methodToCall, MethodReference callingMethod, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, IGeneratedMethodCodeWriter writer, MethodReference callingMethod, MethodReference unresolvedMethodToCall, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadataAccess, IReadOnlyList`1 argumentArray, Boolean useArrayBoundsCheck)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, MethodReference callingMethod, ResolvedMethodInfo methodToCall, IReadOnlyList`1 argumentArray)
at Unity.IL2CPP.MethodBodyWriter.WriteCallExpressionFor(MethodReference callingMethod, ResolvedMethodInfo methodToCall, MethodCallType callType, List`1 argsFor, IMethodMetadataAccess methodMetadataAccess, Boolean emitNullCheckForInvocation)
at Unity.IL2CPP.MethodBodyWriter.WriteCallExpressionFor(ResolvedMethodInfo methodToCall, MethodCallType callType, List`1 poppedValues, IMethodMetadataAccess methodMetadataAccess, Boolean emitNullCheckForInvocation)
at Unity.IL2CPP.MethodBodyWriter.ProcessInstruction(Node node, InstructionBlock block, ResolvedInstruction ins)
at Unity.IL2CPP.MethodBodyWriter.GenerateCodeRecursive(Node node, ReadOnlyDictionary`2 instructionBlocks)
at Unity.IL2CPP.MethodBodyWriter.Generate()
at Unity.IL2CPP.CodeWriters.CodeWriterExtensions.WriteMethodWithMetadataInitialization(IGeneratedMethodCodeWriter writer, String methodSignature, Action`2 writeMethodBody, String uniqueIdentifier, MethodReference methodRef, Boolean writingMethodBody)
at Unity.IL2CPP.MethodWriter.WriteInlineMethodDefinition(MethodWriteContext context, IGeneratedMethodCodeWriter writer, MethodReference method, String usage)
at Unity.IL2CPP.MethodWriter.WriteInlineMethodDefinitions(SourceWritingContext context, String usage, IGeneratedMethodCodeWriter writer)
at Unity.IL2CPP.SourceWriters.SourceWriterBase`2.FlushStream(GlobalWriteContext context, IGeneratedMethodCodeStream stream, NPath filePath)
at Unity.IL2CPP.Contexts.Scheduling.Streams.FileLevelParallelStreamManager`3.WorkerWriteItemsToFile(WorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.PhaseWorkScheduler`1.WorkerLoop(Object data)
Error: IL2CPP error for type 'Futuclass.Game.TaskSystem.Answer' in C:/Projects/Unity/Futuclass/futuclass/Futuclass/Assets/_Futuclass/Scripts/Game/TaskSystem/Question.cs:24
System.InvalidOperationException: Sequence contains no matching element
at System.Linq.ThrowHelper.ThrowNoMatchException()
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Unity.IL2CPP.IntrinsicRemap.SpanGetItemArguments(ReadOnlyContext context, MethodReference callingMethod, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.IntrinsicRemap.GetCustomArguments(ReadOnlyContext context, MethodReference methodToCall, MethodReference callingMethod, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, IGeneratedMethodCodeWriter writer, MethodReference callingMethod, MethodReference unresolvedMethodToCall, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadataAccess, IReadOnlyList`1 argumentArray, Boolean useArrayBoundsCheck)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, MethodReference callingMethod, ResolvedMethodInfo methodToCall, IReadOnlyList`1 argumentArray)
at Unity.IL2CPP.MethodBodyWriter.WriteCallExpressionFor(MethodReference callingMethod, ResolvedMethodInfo methodToCall, MethodCallType callType, List`1 argsFor, IMethodMetadataAccess methodMetadataAccess, Boolean emitNullCheckForInvocation)
at Unity.IL2CPP.MethodBodyWriter.WriteCallExpressionFor(ResolvedMethodInfo methodToCall, MethodCallType callType, List`1 poppedValues, IMethodMetadataAccess methodMetadataAccess, Boolean emitNullCheckForInvocation)
at Unity.IL2CPP.MethodBodyWriter.ProcessInstruction(Node node, InstructionBlock block, ResolvedInstruction ins)
at Unity.IL2CPP.MethodBodyWriter.GenerateCodeRecursive(Node node, ReadOnlyDictionary`2 instructionBlocks)
at Unity.IL2CPP.MethodBodyWriter.Generate()
at Unity.IL2CPP.CodeWriters.CodeWriterExtensions.WriteMethodWithMetadataInitialization(IGeneratedMethodCodeWriter writer, String methodSignature, Action`2 writeMethodBody, String uniqueIdentifier, MethodReference methodRef, Boolean writingMethodBody)
at Unity.IL2CPP.MethodWriter.WriteInlineMethodDefinition(MethodWriteContext context, IGeneratedMethodCodeWriter writer, MethodReference method, String usage)
at Unity.IL2CPP.MethodWriter.WriteInlineMethodDefinitions(SourceWritingContext context, String usage, IGeneratedMethodCodeWriter writer)
at Unity.IL2CPP.SourceWriters.SourceWriterBase`2.FlushStream(GlobalWriteContext context, IGeneratedMethodCodeStream stream, NPath filePath)
at Unity.IL2CPP.Contexts.Scheduling.Streams.FileLevelParallelStreamManager`3.WorkerWriteItemsToFile(WorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.PhaseWorkScheduler`1.WorkerLoop(Object data)
Error: IL2CPP error for method 'System.Boolean System.Text.Json.Serialization.Converters.DictionaryDefaultConverter`3::OnTryRead(System.Text.Json.Utf8JsonReader&,System.Type,System.Text.Json.JsonSerializerOptions,System.Text.Json.ReadStack&,TCollection&)' in assembly 'C:\Projects\Unity\Futuclass\futuclass\Futuclass\Library\Bee\artifacts\Android\ManagedStripped\System.Text.Json.dll'
System.InvalidOperationException: Sequence contains no matching element
at System.Linq.ThrowHelper.ThrowNoMatchException()
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Unity.IL2CPP.IntrinsicRemap.SpanGetItemArguments(ReadOnlyContext context, MethodReference callingMethod, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.IntrinsicRemap.GetCustomArguments(ReadOnlyContext context, MethodReference methodToCall, MethodReference callingMethod, IRuntimeMetadataAccess runtimeMetadata, IEnumerable`1 arguments)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, IGeneratedMethodCodeWriter writer, MethodReference callingMethod, MethodReference unresolvedMethodToCall, MethodReference methodToCall, IRuntimeMetadataAccess runtimeMetadataAccess, IReadOnlyList`1 argumentArray, Boolean useArrayBoundsCheck)
at Unity.IL2CPP.MethodBodyWriter.TryWriteIntrinsicMethodCall(String returnVariable, MethodReference callingMethod, ResolvedMethodInfo methodToCall, IReadOnlyList`1 argumentArray)
at Unity.IL2CPP.MethodBodyWriter.WriteCallExpressionFor(MethodReference callingMethod, ResolvedMethodInfo methodToCall, MethodCallType callType, List`1 argsFor, IMethodMetadataAccess methodMetadataAccess, Boolean emitNullCheckForInvocation)
at Unity.IL2CPP.MethodBodyWriter.WriteCallExpressionFor(ResolvedMethodInfo methodToCall, MethodCallType callType, List`1 poppedValues, IMethodMetadataAccess methodMetadataAccess, Boolean emitNullCheckForInvocation)
at Unity.IL2CPP.MethodBodyWriter.ProcessInstruction(Node node, InstructionBlock block, ResolvedInstruction ins)
at Unity.IL2CPP.MethodBodyWriter.GenerateCodeRecursive(Node node, ReadOnlyDictionary`2 instructionBlocks)
at Unity.IL2CPP.MethodBodyWriter.Generate()
at Unity.IL2CPP.CodeWriters.CodeWriterExtensions.WriteMethodWithMetadataInitialization(IGeneratedMethodCodeWriter writer, String methodSignature, Action`2 writeMethodBody, String uniqueIdentifier, MethodReference methodRef, Boolean writingMethodBody)
at Unity.IL2CPP.MethodWriter.WriteMethodDefinition(AssemblyWriteContext context, IGeneratedMethodCodeWriter writer, MethodReference method)
at Unity.IL2CPP.SourceWriter.WriteType(SourceWritingContext context, IGeneratedMethodCodeWriter writer, TypeReference type, NPath filePath, Boolean writeMarshalingDefinitions)
at Unity.IL2CPP.SourceWriters.SourceWriterBase`2.WriteItem(StreamWorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.Streams.FileLevelParallelStreamManager`3.WorkerWriteItemsToFile(WorkItemData`2 data)
at Unity.IL2CPP.Contexts.Scheduling.PhaseWorkScheduler`1.WorkerLoop(Object data)
Error: IL2CPP error for method 'System.Boolean System.Buffers.Text.Utf8Parser::TryParseAsSpecialFloatingPoint(System.ReadOnlySpan`1<System.Byte>,T,T,T,T&,System.Int32&)' in assembly 'C:\Projects\Unity\Futuclass\futuclass\Futuclass\Library\Bee\artifacts\Android\ManagedStripped\System.Memory.dll'
System.InvalidOperationException: Sequence contains no matching element
at System.Linq.ThrowHelper.ThrowNoMatchException()
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Unity.IL2CPP.IntrinsicRemap.SpanGetItem<message truncated>

 

I failed to notice that one of the errors it has is related to one of our scripts:
"
Error: IL2CPP error for type 'Futuclass.Game.TaskSystem.Answer' in C:/Projects/Unity/Futuclass/futuclass/Futuclass/Assets/_Futuclass/Scripts/Game/TaskSystem/Question.cs:24
System.InvalidOperationException: Sequence contains no matching element
"

The script looks like the following:

Spoiler: Code

Code (CSharp):

1. using System;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.Localization;
5.  
6. namespace Futuclass.Game.TaskSystem
7. {
8.     [CreateAssetMenu(fileName = "Question", menuName = "Futuclass/Tasks/Question")]
9.     public class Question : ScriptableObject
10.     {
11.         public LocalizedString LocalizedText;
12.         public string Text;
13.         public List<Answer> Answers = new List<Answer>();
14.     }
15.  
16.     [Serializable]
17.     public struct Answer
18.     {
19.         public LocalizedString LocalizedText;
20.         public string Text;
21.         public bool Correct;
22.      
23.         public Answer(LocalizedString localizedText, string text, bool correct)
24.         {
25.             LocalizedText = localizedText;
26.             Text = text;
27.             Correct = correct;
28.         }
29.     }
30. }

 

It did not resolve the issue. I get the same error messages.
Here's what some of the settings look like:

Spoiler: Settings

EDIT: I'm not sure why there are empty entries in the Preloaded Assets table. I've noticed this happened or a while now. I remove the empty entries and they're somehow added there again. But I guess it's not related.

 

Are there some settings I can play around with?

 

I will try the new version and let you know if the issue persists.

Thank you!

 

Updating Unity to 2021.2.0f1 has fixed the issue!

Thanks!