trait Trait<'a> {} trait Obj {} fn f<T: (Copy) + (?Sized) + (for<'a> Trait<'a>)>() {} fn main() { let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>; //~^ ERROR `?Trait` is not permitted in trait object types //~| ERROR only auto traits can be used as additional traits //~| WARN trait objects without an explicit `dyn` are deprecated //~| WARN this is accepted in the current edition let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>; //~^ ERROR `?Trait` is not permitted in trait object types //~| ERROR only auto traits can be used as additional traits //~| WARN trait objects without an explicit `dyn` are deprecated //~| WARN this is accepted in the current edition let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>; //~^ ERROR `?Trait` is not permitted in trait object types //~| ERROR only auto traits can be used as additional traits //~| WARN trait objects without an explicit `dyn` are deprecated //~| WARN this is accepted in the current edition }