fix gigantic Params

[ci skip-build-wheels]

src/rust/engine/src/nodes.rs

@@ -1248,7 +1248,11 @@ impl Display for NodeKey {
       &NodeKey::Scandir(ref s) => write!(f, "Scandir({})", (s.0).0.display()),
       &NodeKey::Select(ref s) => write!(f, "{}", s.product),
       &NodeKey::Task(ref task) => {
-        write!(f, "@rule {}({})", task.task.display_info.name, task.params)
+        //TODO cf. https://github.com/pantsbuild/pants/issues/7907 , we probably
+        //want to include some kind of representation of the Params of an @rule when
+        //we stringify the @rule. But we need to make sure we don't naively dump
+        //the string representation of a Key, which could get gigantic.
+        write!(f, "@rule {}", task.task.display_info.name)
       }
       &NodeKey::Snapshot(ref s) => write!(f, "Snapshot({})", s.0),
     }