Applies isolated test context per moment-run

ContinuousTests/SingleTestRun.cs

@@ -3,6 +3,7 @@ using DistTestCore;
 using Logging;
 using Utils;
 using KubernetesWorkflow;
+using NUnit.Framework.Internal;
 
 namespace ContinuousTests
 {
@@ -90,6 +91,8 @@ namespace ContinuousTests
         }
 
         private void RunMoment(int t)
+        {
+            using (var context = new TestExecutionContext.IsolatedContext())
             {
                 try
                 {
@@ -100,6 +103,7 @@ namespace ContinuousTests
                     Log($" > TestMoment yielded exception: " + ex);
                     exceptions.Add(ex);
                 }
+            }
 
             DecommissionTest();
         }