`build` fails with "Invalid restore input. Duplicate frameworks found: 'net6.0-windows7.0, net6.0, net6.0'"

[jkotas]

Repro

Run build without any arguments from the root of the repo according to the
https://github.com/dotnet/runtime/blob/master/docs/workflow/README.md#concepts

Actual result

  installer.tasks -> D:\runtime\artifacts\bin\installer.tasks\Debug\net461\installer.tasks.dll
  installer.tasks -> D:\runtime\artifacts\bin\installer.tasks\Debug\netstandard2.0\installer.tasks.dll
  Determining projects to restore...
D:\runtime\.dotnet\sdk\5.0.100-rc.2.20479.15\NuGet.RestoreEx.targets(19,5): error : Invalid restore input. Duplicate frameworks found: 'net6.0-windows7.0, net6.0, net6.0'. Input files: D:\runtime\src\libraries\Microsoft.Win32.Primitives\src\Microsoft.Win32.Primitives.csproj. [D:\runtime\Build.proj]
D:\runtime\.dotnet\sdk\5.0.100-rc.2.20479.15\NuGet.RestoreEx.targets(19,5): error :    at NuGet.Commands.SpecValidationUtility.ValidateFrameworks(PackageSpec spec, IEnumerable`1 files) [D:\runtime\Build.proj]

Expected result

Builds successful. This is regression introduced in recent week or so.

[Dotnet-GitSync-Bot]

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

Tagging subscribers to this area: @ViktorHofer
See info in area-owners.md if you want to be subscribed.

Issue Details

Description:	Repro Run build without any arguments from the root of the repo according to the https://github.com/dotnet/runtime/blob/master/docs/workflow/README.md#concepts Actual result installer.tasks -> D:\runtime\artifacts\bin\installer.tasks\Debug\net461\installer.tasks.dll installer.tasks -> D:\runtime\artifacts\bin\installer.tasks\Debug\netstandard2.0\installer.tasks.dll Determining projects to restore... D:\runtime\.dotnet\sdk\5.0.100-rc.2.20479.15\NuGet.RestoreEx.targets(19,5): error : Invalid restore input. Duplicate frameworks found: 'net6.0-windows7.0, net6.0, net6.0'. Input files: D:\runtime\src\libraries\Microsoft.Win32.Primitives\src\Microsoft.Win32.Primitives.csproj. [D:\runtime\Build.proj] D:\runtime\.dotnet\sdk\5.0.100-rc.2.20479.15\NuGet.RestoreEx.targets(19,5): error : at NuGet.Commands.SpecValidationUtility.ValidateFrameworks(PackageSpec spec, IEnumerable`1 files) [D:\runtime\Build.proj] Expected result Builds successful. This is regression introduced in recent week or so.
Author:	jkotas
Assignees:	-
Labels:	area-Infrastructure, untriaged
Milestone:	-

[jkotas]

@jkoritzinsky I suspect that this was introduced by the sharedframework sdk changes.

[jkoritzinsky]

I don't think this is from the shared framework changes. That PR didn't touch the libraries infrastructure at all. This looks like something related to work that @Anipik has been doing.

[ViktorHofer]

I believe this is related to @Anipik's changes as he stopped stripping the platform from the target framework. @Anipik can you please take a look?

[Anipik]

I will take a look

[Anipik]

@jkotas is still reproing on ur machine ? because i tried build.cmd on the my machine and it works, can you provide some more info ?

[jkotas]

I am not able to reproduce this anymore. I guess it was caused triggered by AzDo availability problems. Another similar issue is #44710.

I will close this issue and open a new issue to improve diagnostic for networking issues hit during the build. As it stands, network issues hit during the build can lead to very arbitrary errors.