VMR Stage 2 building failed in fsharp with package downgrade

[Winniexu01]

Main build: https://dev.azure.com/dnceng/internal/_build/results?buildId=2478805&view=logs&j=3121c41d-6088-53a5-4ef6-9a86f3460fe9&t=334539f4-dcef-5cad-a240-02997b3146e7

VMR Stage2 building fsharp failed with the following errors:

  /vmr/src/fsharp/src/fsc/fscProject/fsc.fsproj : error NU1605: Detected package downgrade: System.Reflection.Metadata from 9.0.0-preview.6.24319.11 to 8.0.0. Reference the package directly from the project to select a different version. [/vmr/artifacts/source-built-sdks/Microsoft.DotNet.Arcade.Sdk/tools/Build.proj]
##[error]/vmr/src/fsharp/src/fsc/fscProject/fsc.fsproj(0,0): error NU1605: Detected package downgrade: System.Reflection.Metadata from 9.0.0-preview.6.24319.11 to 8.0.0. Reference the package directly from the project to select a different version.
  /vmr/src/fsharp/src/fsc/fscProject/fsc.fsproj : error NU1605: fsc -> Microsoft.Build.Tasks.Core 17.11.0-preview-24318-05 -> System.Reflection.Metadata (>= 9.0.0-preview.6.24319.11) [/vmr/artifacts/source-built-sdks/Microsoft.DotNet.Arcade.Sdk/tools/Build.proj]
##[error]/vmr/src/fsharp/src/fsc/fscProject/fsc.fsproj(0,0): error NU1605: fsc -> Microsoft.Build.Tasks.Core 17.11.0-preview-24318-05 -> System.Reflection.Metadata (>= 9.0.0-preview.6.24319.11)
  /vmr/src/fsharp/src/fsc/fscProject/fsc.fsproj : error NU1605: fsc -> System.Reflection.Metadata (>= 8.0.0) [/vmr/artifacts/source-built-sdks/Microsoft.DotNet.Arcade.Sdk/tools/Build.proj]
##[error]/vmr/src/fsharp/src/fsc/fscProject/fsc.fsproj(0,0): error NU1605: fsc -> System.Reflection.Metadata (>= 8.0.0)

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[MichaelSimons]

@ViktorHofer, can you take a look? TIA.

[ViktorHofer]

Interesting. I thought that dotnet/sdk@05abdc5 would prevent this. I would need to check why msbuild and runtime dependencies are still auto-upgraded.

[ViktorHofer]

Fixed via dotnet/fsharp#17344. dotnet/sdk#41788 fixes it for P6.