Non deterministic base dir in stack traces

[NinoFloris]

SDK: 3.1.102

System.InvalidOperationException: ValueOption.Value
   at Microsoft.FSharp.Core.FSharpValueOption`1.get_Value() in E:\A\_work\130\s\src\fsharp\FSharp.Core\prim-types.fs:line 2934

It seems something broke in this area which caused non deterministic paths to be shipped.

[cartermp]

@NinoFloris can you share a repro? I assume you're using PathMap?

[NinoFloris]

Ha yes there were clues in the trace but, ValueOption<int>.ValueNone.Value does the trick 😃 (probably any exception from Fsharp.core)

[NinoFloris]

Any luck here @cartermp ?

[cartermp]

Sorry, I initially misunderstood the bug here. Yes, there's no PathMap getting applied to FSharp.Core and it's just including the path of the CI machine it was built and shipped on. cc @brettfo @jonsequitur

[baronfel]

@KevinRansom per the discussion on #9379 (and the deeper issue linked in dotnet/msbuild#5398), would it make sense to copy/paste or translate the existing MapSourceRoot task + target file changes into here, including tests? If so, I can have those changes ready to go shortly.