Every other build of clr component (first is ok, second fails, third is ok, fourth fails etc). with the following error

D:\git\runtime6.dotnet\sdk\10.0.100-rc.1.25420.111\Sdks\NuGet.Build.Tasks.Pack\build\NuGet.Build.Tasks.Pack.targets(221,5): error NU5019: File not found: 'D:\git\runtime6\artifacts\obj\coreclr\Microsoft.NET.Sdk.IL\windows.x64.Debug\Microsoft.NET.Sdk.IL.targets'. [D:\git\runtime6\src\coreclr.nuget\Microsoft.NET.Sdk.IL\Microsoft.NET.Sdk.IL.proj]

My build command is e.g. .\build.cmd clr+libs -c Release -rc Checked

This happens both on Windows and macOS (I haven't tried others)