Debugger: Improve the error message when vscode attempt to attach to dotnet process with mismatched privilege

Environment data

dotnet --info output: VS Code version:1.2.1 C# Extension version:1.1.7

Steps to reproduce

1. Create a sample .dotnet core console application with following code:

   public static void Main(string[] args)
   {
       Console.ReadLine();
       Console.WriteLine("Hello World!");
   }
   

2. Launch vscode with non-admin and open the project

3. Launch command line with admin, and run the application “dotnet run”

4. Set the target as “attach” and configure the process id of “dotnet”

5. F5

   Expected behavior

Actually, when I did the testing, I was not aware of launching vscode with non-admin, I suppose this is not supported scenario, however I assume we should at least improve the error message,

1. At least we should try to remove the internal error message "Unexpected CLRDBG output from command “-target-attach 8508”. " ?
2. Is it possible to add some useful information similar like “vscode doesn’t have the sufficient permission to attach the process” if the permission of vscode and attached process is mismatched ?

Actual behavior

Error: No process with the specified id is currently running.

(This is VSDBGE_E_PROCESS_ID_NOT_FOUND)

[gregg-miskelly]

@kroppt I reproduced your issue and I opened up https://github.com/OmniSharp/omnisharp-vscode/issues/1660 to track it. I hope to have a private out later today with the fix.

[gregg-miskelly]

Lets see if we can fix this for 1.16, as several people have hit into it now.