Test failng

[kant2002]

https://github.com/ForNeVeR/Cesium/actions/runs/11950256474/job/33311366528?pr=727

I did try reproduce issue locally and if running dotnet nuke TestSdk issue reproduced for me. I have .NET SDK 8.0.101
If create project, restore it, and run

dotnet  msbuild .\SimpleCoreExe.ceproj "/t:Restore;Build" /restore /bl

issue does not reproduced.

[kant2002]

Failure stack trace

14:28:52 [DBG]  [stdout]: MSBuild version 17.12.7+5b8665660 for .NET
14:28:52 [DBG]  [stdout]:   Determining projects to restore...
14:28:52 [DBG]  [stdout]:   Restored C:\Users\User\AppData\Local\Temp\qqjnocx4.giz\SimpleCoreExe\SimpleCoreExe.ceproj (in 1.91 sec).
14:28:52 [DBG]  [stdout]:   Determining projects to restore...
14:28:52 [DBG]  [stdout]:   All projects are up-to-date for restore.
14:28:52 [DBG]  [stdout]: Generating assembly obj\Debug\net6.0\SimpleCoreExe.dll.
14:28:52 [DBG]  [stdout]: Processing input file "hello.c".
14:28:52 [DBG]  [stdout]: Generating a .NET 6 runtime config at obj\Debug\net6.0\SimpleCoreExe.runtimeconfig.json.
14:28:52 [DBG]  [stdout]: C:\Program Files\dotnet\sdk\8.0.404\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(709,5): error MSB4018: The "CreateAppHost" task failed unexpectedly. [C:\Users\User\AppData\Local\Temp\qqjnocx4.giz\SimpleCoreExe\SimpleCoreExe.ceproj]
14:28:52 [DBG]  [stdout]: C:\Program Files\dotnet\sdk\8.0.404\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(709,5): error MSB4018: System.MissingMethodException: Method not found: 'Boolean Microsoft.NET.HostModel.ResourceUpdater.IsSupportedOS()'. [C:\Users\User\AppData\Local\Temp\qqjnocx4.giz\SimpleCoreExe\SimpleCoreExe.ceproj]
14:28:52 [DBG]  [stdout]: C:\Program Files\dotnet\sdk\8.0.404\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(709,5): error MSB4018:    at Microsoft.NET.Build.Tasks.CreateAppHost.ExecuteCore() [C:\Users\User\AppData\Local\Temp\qqjnocx4.giz\SimpleCoreExe\SimpleCoreExe.ceproj]
14:28:52 [DBG]  [stdout]: C:\Program Files\dotnet\sdk\8.0.404\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(709,5): error MSB4018:    at Microsoft.NET.Build.Tasks.TaskBase.Execute() [C:\Users\User\AppData\Local\Temp\qqjnocx4.giz\SimpleCoreExe\SimpleCoreExe.ceproj]
14:28:52 [DBG]  [stdout]: C:\Program Files\dotnet\sdk\8.0.404\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(709,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Execute() [C:\Users\User\AppData\Local\Temp\qqjnocx4.giz\SimpleCoreExe\SimpleCoreExe.ceproj]
14:28:52 [DBG]  [stdout]: C:\Program Files\dotnet\sdk\8.0.404\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(709,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(TaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) 

[kant2002]

Method ResourceUpdater.IsSupportedOS() was removed in .NET 9 SDK

https://github.com/dotnet/sdk/blob/merge/release/8.0.4xx-to-release/9.0.1xx/src/Tasks/Microsoft.NET.Build.Tasks/CreateAppHost.cs

So I think this is related to fact that we run test using .NET 9 SDK

[ForNeVeR]

Yep I see how that could happen. Perhaps .NET 9 appeared on agents somehow?

Let's try emitting global.json in tests for them to choose the correct SDK maybe?

[kant2002]

If we issue global.json for Sdk projects when we copy to new directory, but then subsequently we have other, different issue, but probably of similar nature - inside IntegrationTests