User cannot build for IL2CPP when using the entities package. Regressed version - 2020.1.0a17 c64fb017 (landed Dec.19)

Repro Steps:
- download attached project
- attempt to build the project for IL2CPP
- see the following failures in the console:

[00:45:43.996 INF] LogEntry
severity: Error
message: Failed running C:\build\output\unity\com.unity.dataflowgraph\.Editor\Data\il2cpp\build/deploy/net471/UnityLinker.exe -out=C:/7fFqbg/Temp/StagingArea/Data/Managed/tempStrip -x=C:/Users/bokken/AppData/Local/Temp/tmp4b52d
[00:45:43.998 INF] 78e.tmp -x=C:/Users/bokken/AppData/Local/Temp/tmp1c92404e.tmp -x=C:/7fFqbg/Temp/StagingArea/Data/Managed/TypesInScenes.xml -x=C:/7fFqbg/Temp/StagingArea/Data/Managed/DotsStripping.xml -d=C:/7fFqbg/Temp/StagingArea/Data/Managed --include-unity-root-assembly=C:/7fFqbg/Temp/StagingArea/Data/Managed/UnityEngine.TestRunner.dll --include-unity-root-assembly=C:/7fFqbg/Temp/StagingArea/Data/Managed/Unity.DataFlowGraph.Samples.Test.dll --dotnetruntime=il2cpp --dotnetprofile=unityaot --use-editor-options --include-directory=C:/7fFqbg/Temp/StagingArea/Data/Managed --rule-set=Conservative --editor-data-file=C:/7fFqbg/Temp/StagingArea/Data/Managed/EditorToUnityLinkerData.json --platform=WindowsDesktop --engine-modules-asset-file=C:/build/output/unity/com.unity.dataflowgraph/.Editor/Data/PlaybackEngines/WindowsStandaloneSupport/Whitelists/../modules.asset
stdout:
Fatal error in Unity CIL Linker
Mono.Linker.MarkException: Error processing method: 'Unity.Properties.IPropertyBag`1<TContainer> Unity.Properties.Reflection.ReflectedPropertyBagProvider::Generate()' in assembly: 'Unity.Properties.dll' ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Unity.Linker.Steps.Marking.ReflectionMarking.<>c.<ProcessGetFields>b__16_0(TypeDefinition t)
at Unity.Linker.Steps.Marking.ReflectionMarking.ProcessGetMemberCollection[T](ReflectionUsageContext reflectionContext, DetailedStackItem stackItem, Func`2 getMembers, Func`2 isPublic, Action`1 markMember, Boolean includeBaseTypes)
at Unity.Linker.Steps.Marking.ReflectionMarking.ProcessGetFields(ReflectionUsageContext reflectionContext, DetailedStackItem stackItem)
at Unity.Linker.Steps.Marking.ReflectionMarking.MarkThingsUsedViaReflection(MethodBody body)
at Unity.Linker.Steps.UnityMarkStep.MarkReflectionLikeDependencies(MethodBody body)
at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
at Unity.Linker.Steps.UnityMarkStep.MarkMethodBody(MethodBody body)
at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
at Unity.Linker.Steps.UnityMarkStep.ProcessMethod(MethodDefinition method)
at Mono.Linker.Steps.MarkStep.ProcessQueue()
--- End of inner exception stack trace ---
at Mono.Linker.Steps.MarkStep.ProcessQueue()
at Mono.Linker.Steps.MarkStep.ProcessPrimaryQueue()
at Mono.Linker.Steps.MarkStep.Process()
at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
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:
stacktrace: UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action`1)
UnityEditorInternal.AssemblyStripper:RunAssemblyLinker(IEnumerable`1, String&, String&, String, String)
UnityEditorInternal.AssemblyStripper:StripAssembliesTo(String, String&, String&, IEnumerable`1, UnityLinkerRunInformation)
UnityEditorInternal.AssemblyStripper:RunAssemblyStripper(UnityLinkerRunInformation)
UnityEditorInternal.AssemblyStripper:StripAssemblies(String, BaseUnityLinkerPlatformProvider, IIl2CppPlatformProvider, RuntimeClassRegistry, ManagedStrippingLevel)
UnityEditorInternal.IL2CPPBuilder:Run()
UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry)
DesktopStandalonePostProcessor:SetupStagingArea(BuildPostProcessArgs, HashSet`1)
DesktopStandalonePostProcessor:PostProcess(BuildPostProcessArgs)
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()
line: 121
file: Library/PackageCache/com.unity.test-framework@1.1.5/UnityEditor.TestRunner/TestLaunchers/PlayerLauncher.cs
LogEntry
severity: Error
message: Exception: C:\build\output\unity\com.unity.dataflowgraph\.Editor\Data\il2cpp\build/deploy/net471/UnityLinker.exe did not run properly!