error[E0433]: failed to resolve: `Vec` is a struct, not a module --> $DIR/macro-path-prelude-fail-1.rs:3:9 | LL | Vec::clone!(); | ^^^ `Vec` is a struct, not a module error[E0433]: failed to resolve: `u8` is a builtin type, not a module --> $DIR/macro-path-prelude-fail-1.rs:4:9 | LL | u8::clone!(); | ^^ `u8` is a builtin type, not a module error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0433`.