UnityLinker.exe error in 2019.2.2 LWRP

Hi all,

I get an error from UnityLinker (see below) in Unity 2019.2.2f1, Android and PC Standalone build. The project also uses LWRP which, I assume, is not so important here. I did not test with standard rendering. I can reproduce this error in an empty project just importing the OPCUA4Unity asset. Other settings are IL2CPP, Net Standard 2.0.

Edit: Maybe it is helpfull to know, that Mono Scripting Backend does not run into this.

Full error message:

UnityLinker.exe -out="C:/Users/Unity/New Unity Project/Temp/StagingArea/Data/Managed/tempStrip" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Core.xml" -x="C:/Users/jg/Unity/New Unity Project/Temp/StagingArea/Data/Managed/TypesInScenes.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Accessibility.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/AI.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/AndroidJNI.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Animation.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/AR.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/AssetBundle.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Audio.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Cloth.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/ClusterInput.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/ClusterRenderer.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Core.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/CrashReporting.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Director.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/DSPGraph.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/FileSystemHttp.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/GameCenter.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Grid.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/HotReload.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/ImageConversion.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/IMGUI.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Input.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/InputLegacy.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/JSONSerialize.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Localization.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/ParticleSystem.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/PerformanceReporting.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Physics.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Physics2D.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Profiler.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/ScreenCapture.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/SharedInternals.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/SpriteMask.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/SpriteShape.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Streaming.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Substance.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Terrain.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/TerrainPhysics.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/TextCore.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/TextRendering.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Tilemap.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/TLS.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UI.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UIElements.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Umbra.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UNET.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityAnalytics.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityConnect.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityTestProtocol.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityWebRequest.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityWebRequestAssetBundle.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityWebRequestAudio.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityWebRequestTexture.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/UnityWebRequestWWW.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Vehicles.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/VFX.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Video.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/VR.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/Wind.xml" -x="C:/Program Files/Unity/Hub/Editor/2019.2.2f1/Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/XR.xml" -d="C:/Users/jg/Unity/New Unity Project/Temp/StagingArea/Data/Managed" --include-unity-root-assembly="C:/Users/jg/Unity/New Unity Project/Temp/StagingArea/Data/Managed/Assembly-CSharp.dll" --include-unity-root-assembly="C:/Users/jg/Unity/New Unity Project/Temp/StagingArea/Data/Managed/Unity.RenderPipelines.Lightweight.Runtime.dll" --include-unity-root-assembly="C:/Users/jg/Unity/New Unity Project/Temp/StagingArea/Data/Managed/Unity.Postprocessing.Runtime.dll" --dotnetruntime=il2cpp --dotnetprofile=unityaot --use-editor-options --include-directory="C:/Users/jg/Unity/New Unity Project/Temp/StagingArea/Data/Managed" --rule-set=Conservative --editor-data-file="C:/Users/jg/Unity/New Unity Project/Temp/StagingArea/Data/Managed/EditorToUnityLinkerData.json" --disable-engine-module-support

stdout:
Fatal error in Unity CIL Linker
System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
at Mono.Linker.Steps.MarkStep.ProcessMarkedTypesWithInterfaces()
at Mono.Linker.Steps.MarkStep.ProcessPrimaryQueue()
at Mono.Linker.Steps.MarkStep.Process()
at Unity.Linker.Steps.UnityMarkStep.Process(LinkContext context)
at Mono.Linker.Pipeline.ProcessStep(LinkContext context, IStep step)
at Unity.Linker.UnityPipeline.ProcessStep(LinkContext context, IStep step)
at Mono.Linker.Pipeline.Process(LinkContext context)
at Unity.Linker.UnityDriver.Run()
at Unity.Linker.UnityDriver.RunDriverWithoutErrorHandling()
at Unity.Linker.UnityDriver.RunDriver()
stderr:

UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:126)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action`1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:71)
UnityEditorInternal.AssemblyStripper:RunAssemblyLinker(IEnumerable`1, String&, String&, String, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:222)
UnityEditorInternal.AssemblyStripper:StripAssembliesTo(String[], String[], String, String, String&, String&, String, IIl2CppPlatformProvider, IEnumerable`1, BuildTargetGroup, ManagedStrippingLevel, Boolean, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:158)
UnityEditorInternal.AssemblyStripper:RunAssemblyStripper(IEnumerable, String, String[], String[], String, IIl2CppPlatformProvider, RuntimeClassRegistry, ManagedStrippingLevel) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:358)
UnityEditorInternal.AssemblyStripper:StripAssemblies(String, IIl2CppPlatformProvider, RuntimeClassRegistry, ManagedStrippingLevel) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:246)
UnityEditorInternal.IL2CPPBuilder:Run() (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:326)
UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:70)
DesktopStandalonePostProcessor:SetupStagingArea(BuildPostProcessArgs, HashSet`1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/DesktopStandalonePostProcessor.cs:242)
DesktopStandalonePostProcessor:PostProcess(BuildPostProcessArgs) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/DesktopStandalonePostProcessor.cs:41)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)