struct Test;
impl Add for Test {} //~ ERROR cannot find trait `Add` in this scope
-impl Clone for Test {} //~ ERROR cannot find trait `Clone` in this scope
+impl Clone for Test {} //~ ERROR expected trait, found derive macro `Clone`
impl Iterator for Test {} //~ ERROR cannot find trait `Iterator` in this scope
impl ToString for Test {} //~ ERROR cannot find trait `ToString` in this scope
impl Writer for Test {} //~ ERROR cannot find trait `Writer` in this scope