error[E0277]: the trait bound `{integer}: Foo` is not satisfied --> $DIR/error.rs:10:27 | LL | let dyn_i: dyn* Foo = i; | ^ the trait `Foo` is not implemented for `{integer}` | help: this trait has no implementations, consider adding one --> $DIR/error.rs:6:1 | LL | trait Foo {} | ^^^^^^^^^ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.