error[E0055]: reached the recursion limit while auto-dereferencing `J` --> $DIR/issue-38940.rs:49:22 | LL | let x: &Bottom = &t; | ^^ deref recursion limit reached | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "20"]` attribute to your crate (`issue_38940`) error[E0308]: mismatched types --> $DIR/issue-38940.rs:49:22 | LL | let x: &Bottom = &t; | ------- ^^ expected struct `Bottom`, found struct `Top` | | | expected due to this | = note: expected reference `&Bottom` found reference `&Top` error: aborting due to 2 previous errors Some errors have detailed explanations: E0055, E0308. For more information about an error, try `rustc --explain E0055`.