Log debug information when queue events time out due to lingering wai…

…tUntil tasks

src/workerd/api/queue.c++

@@ -525,11 +525,27 @@ kj::Promise<WorkerInterface::CustomEvent::Result> QueueCustomEventImpl::run(
   // reuse the scheduled worker logic and timeout for now.
   auto completed = co_await incomingRequest->finishScheduled();
 
-  // Log some debug info if the timeout was encountered
+  // Log some debug info if the request did not complete fully:
+  // In particular, detect whether or not the users queue() handler function completed
+  // and include info about other waitUntil tasks that may have caused the request to timeout.
   if (!completed) {
-    // TODO(now) log success vs error cases
+    kj::String statusStr;
+    KJ_SWITCH_ONEOF(queueEventHolder->event->getCompletionStatus()) {
+      KJ_CASE_ONEOF(i, QueueEvent::Incomplete) {
+        statusStr = kj::str("Incomplete");
+        break;
+      }
+      KJ_CASE_ONEOF(s, QueueEvent::CompletedSuccessfully) {
+        statusStr = kj::str("Completed Succesfully");
+        break;
+      }
+      KJ_CASE_ONEOF(e, QueueEvent::CompletedWithError) {
+        statusStr = kj::str("Completed with error:", e.error);
+        break;
+      }
+    }
     auto taskTrace = incomingRequest->getContext().getWaitUntilTasks().trace();
-    KJ_LOG(WARNING, kj::str("Queue event timed out due to lingering waitUntil tasks:\n", taskTrace));
+    KJ_LOG(WARNING, "NOSENTRY queue event timed out. Status: ", statusStr, ". Tasks: ", taskTrace);
   }
 
   co_return WorkerInterface::CustomEvent::Result {