After updating to the latest 11 SDK and as part of retargeting we're noticing this assembly is failing crossgen.

The error is
D:\a_work\1\s.dotnet\sdk\11.0.100-alpha.1.25618.104\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.CrossGen.targets(488,5): error MSB6006: "D:\a_work\1\s\src\roslyn\artifacts.packages\microsoft.netcore.app.crossgen2.win-x64\11.0.0-alpha.1.25618.104\tools\crossgen2.exe" exited with code 57005. [D:\a_work\1\s\src\roslyn\src\LanguageServer\Microsoft.CodeAnalysis.LanguageServer\Microsoft.CodeAnalysis.LanguageServer.csproj]

With no other information.

It could be an assert in crossgen2. We need to isolate this in a way that's easier to reproduce and then capture more detail from crossgen2 -- why doesn't it forward any of it's logging?

For now we'll disable this assembly.