Don't isolate, remove GC

.github/workflows/rust-ci.yml

@@ -16,5 +16,5 @@ jobs:
       minimum_coverage: "0"
       additional_system_deps: "libjna-java"
       cargo_command_env_vars: "PATH=$JAVA_HOME_21_X64/bin:$PATH CLASSPATH=/usr/share/java/jna.jar"
-      cargo_command_test_args: "test_cancel_delay_fixtures"
+      # cargo_command_test_args: "test_cancel_delay_fixtures"
     secrets: inherit

tests/scripts/TestFixtureCancelDelay/TestFixtureCancelDelay.java

@@ -122,15 +122,13 @@ public CompletableFuture<Void> tryDelay(String delayMs) {
         var completedDelaysBefore = traitObj.completedDelays;
         System.out.println("Calling for cancel_delay from Java: " + System.nanoTime());
         Futures.cancelDelayUsingTrait(traitObj, 10).get();
-        System.gc();
         // sleep long enough so that the `delay()` call would finish if it wasn't cancelled.
         TestFixtureCancelDelay.delay(100).get();
         // If the task was cancelled, then completedDelays won't have increased
         assert traitObj.completedDelays == completedDelaysBefore : MessageFormat.format("{0} current delays != {1} delays before", traitObj.completedDelays, completedDelaysBefore);
 
         // Test that all handles were cleaned up
         // TODO(murph): this is inconsistently failing in CI, touch
-        System.gc();
         var endingHandleCount = UniffiAsyncHelpers.uniffiForeignFutureHandleCount();
         assert endingHandleCount == 0 : MessageFormat.format("{0} current handle count != 0", endingHandleCount);
       }