MissingMethodException: Default constructor not found for type System.Diagnostics.SystemDiagnosticsSection

[Arakade]

Getting the exception running a built Unity game using MoonSharp when it tries to load the UnityScriptLoader class and any amount of stripping enabled. With no stripping, it works; low or above, error.

The exception is basically line 106 trying to call System.Diagnostics.Debug.WriteLine() -- the runtime fails to load the UnityScriptLoader class due to this requiring System.Diagnostics.SystemDiagnosticsSection.

I'm using Unity 2020.3.20f1 (latest LTS) and targeting Mono with .Net 4.x API in a development build (hence DEBUG is set so the Debug.WriteLine() call isn't stripped out).

I've tried adding a link.xml with the following but still no luck.

<assembly fullname="System">
    <type fullname="System.Diagnostics.SystemDiagnosticsSection" preserve="all"/>
</assembly>

Googling found BastianBlokland/componenttask-unity#20 which sounds eerily similar.
Their workaround was disabling the calls in certain situations. (not tried yet since grep says there are quite a few.)

Full exception:

Error initializing UnityScriptLoader : System.NullReferenceException: Object reference not set to an instance of an object
  at MoonSharp.Interpreter.Loaders.UnityAssetsScriptLoader.LoadResourcesWithReflection (System.String assetsPath) [0x00080] in ...\Assets\Plugins\MoonSharp\Interpreter\Loaders\UnityAssetsScriptLoader.cs:89 
MissingMethodException: Default constructor not found for type System.Diagnostics.SystemDiagnosticsSection
  at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) [0x0007b] in <c6b12fce3f944c56a98263b7506fd9c5>:0 
  at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00009] in <c6b12fce3f944c56a98263b7506fd9c5>:0 
  at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00027] in <c6b12fce3f944c56a98263b7506fd9c5>:0 
  at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) [0x0002c] in <c6b12fce3f944c56a98263b7506fd9c5>:0 
  at System.Configuration.ConfigInfo.CreateInstance () [0x00026] in <f81481506e0240458a7971bcdf21632d>:0 
  at System.Configuration.SectionInfo.CreateInstance () [0x00000] in <f81481506e0240458a7971bcdf21632d>:0 
  at System.Configuration.Configuration.GetSectionInstance (System.Configuration.SectionInfo config, System.Boolean createDefaultInstance) [0x0001c] in <f81481506e0240458a7971bcdf21632d>:0 
  at System.Configuration.ConfigurationSectionCollection.get_Item (System.String name) [0x0002c] in <f81481506e0240458a7971bcdf21632d>:0 
  at System.Configuration.Configuration.GetSection (System.String sectionName) [0x0001e] in <f81481506e0240458a7971bcdf21632d>:0 
  at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection (System.String configKey) [0x00006] in <f81481506e0240458a7971bcdf21632d>:0 
  at System.Configuration.ConfigurationManager.GetSection (System.String sectionName) [0x00005] in <f81481506e0240458a7971bcdf21632d>:0 
  at System.Configuration.PrivilegedConfigurationManager.GetSection (System.String sectionName) [0x00000] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at System.Diagnostics.DiagnosticsConfiguration.GetConfigSection () [0x00000] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at System.Diagnostics.DiagnosticsConfiguration.Initialize () [0x0002a] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at System.Diagnostics.DiagnosticsConfiguration.get_IndentSize () [0x00000] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at System.Diagnostics.TraceInternal.InitializeSettings () [0x0004e] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at System.Diagnostics.TraceInternal.get_UseGlobalLock () [0x00000] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at System.Diagnostics.TraceInternal.WriteLine (System.String message) [0x00000] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at System.Diagnostics.Debug.WriteLine (System.String message) [0x00000] in <3cadc1d286c84f728a6ecce7cc469c4b>:0 
  at MoonSharp.Interpreter.Loaders.UnityAssetsScriptLoader.LoadResourcesWithReflection (System.String assetsPath) [0x00109] in ...\Assets\Plugins\MoonSharp\Interpreter\Loaders\UnityAssetsScriptLoader.cs:106 
  at MoonSharp.Interpreter.Loaders.UnityAssetsScriptLoader..ctor (System.String assetsPath) [0x0001f] in ...\Assets\Plugins\MoonSharp\Interpreter\Loaders\UnityAssetsScriptLoader.cs:37 
  at MoonSharp.Interpreter.Platforms.PlatformAutoDetector.GetDefaultScriptLoader () [0x00010] in ...\Assets\Plugins\MoonSharp\Interpreter\Platforms\PlatformAutoDetector.cs:134 
  at MoonSharp.Interpreter.Script..cctor () [0x0000c] in ...\Assets\Plugins\MoonSharp\Interpreter\Script.cs:47