nunit-console: Test runner does not close fired up proceseses.

When I fire up a test runner, it starts two processes:

After the runner has performed the test round it should close the processes. I try to accomplish this by setting one of the following configurations:

static void Main(string[] args)
        {
            // Get an interface to the engine
            using (ITestEngine engine = TestEngineActivator.CreateInstance())
            {
                var settings = engine.Services.GetService<ISettings>();

                settings.SaveSetting("DisposeRunners", true);
                settings.SaveSetting("StopOnError", true);
                settings.SaveSetting("DebugAgent", false);
                settings.SaveSetting("DebugTests", false);

                // Create a simple test package - one assembly, no special settings
                TestPackage package = new TestPackage(@"E:\programming\FaultifyNew\Faultify\Benchmark\Faultify.Benchmark.NUnit\bin\Debug\netcoreapp3.1\test-duplication-0\Faultify.Benchmark.NUnit.dll");
                package.AddSetting("DisposeRunners", true);
                package.AddSetting("StopOnError", true);
                package.AddSetting("DebugAgent", false);
                package.AddSetting("DebugTests", false);

                // Get a runner for the test package
                using (ITestRunner runner = engine.GetRunner(package))
                {
                    // Run all the tests in the assembly
                    XmlNode testResult = runner.Run(null, TestFilter.Empty);

                    runner.StopRun(true);
                    runner.Unload();
                }
            };

            Console.ReadLine();
        }

None of them seem to work and have no effect. How can I make sure the processes fired-up by the runner are closed? They are locking my files which prevents me to use them.’

Info “NUnit.Engine” Version=“3.12.0” netcoreapp3.1

Files

NUnitRunner.zip