add user visible errors for memory

Author: francesconazzaro

cads_broker/dispatcher.py

@@ -264,10 +264,16 @@ def set_request_error_status(
                         db.add_event(
                             event_type="killed_worker",
                             request_uid=request_uid,
-                            message="Worker has been killed by the Nanny due to memory usage. "
+                            message="Worker has been killed by the Nanny due to memory usage."
                             f"{job['worker']=}, {job['pid']=}, {job['rss']=}",
                             session=session,
                         )
+                        db.add_event(
+                            event_type="user_visible_error",
+                            request_uid=request_uid,
+                            message="Worker has been killed due to memory usage. ",
+                            session=session,
+                        )
                         request = db.set_request_status(
                             request_uid,
                             "failed",