--- /dev/null
+error[E0277]: the trait bound `T: Clone` is not satisfied
+ --> $DIR/bounds-are-checked-2.rs:9:13
+ |
+LL | type X<T> = impl Clone;
+ | ^^^^^^^^^^ the trait `Clone` is not implemented for `T`
+ |
+help: consider restricting type parameter `T`
+ |
+LL | type X<T: Clone> = impl Clone;
+ | ^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.