trait Trait { fn baz(&self, _: Self) {} //~^ ERROR the size for values of type `Self` cannot be known fn bat(&self) -> Self {} //~^ ERROR mismatched types //~| ERROR the size for values of type `Self` cannot be known } fn bar(x: &dyn Trait) {} //~ ERROR the trait `Trait` cannot be made into an object trait Other: Sized {} fn foo(x: &dyn Other) {} //~ ERROR the trait `Other` cannot be made into an object fn main() {}