error[E0277]: the trait bound `Foo: Into<_>` is not satisfied --> $DIR/issue-109436.rs:12:22 | LL | let b: Bar = foo.into(); | ^^^^ the trait `~const Into<_>` is not implemented for `Foo` | = note: required for `Foo` to implement `Into` help: consider borrowing here | LL | let b: Bar = (&foo).into(); | ++ + error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.