error[E0308]: mismatched types --> $DIR/no_revealing_outside_defining_module.rs:26:19 | LL | let _: &str = bomp(); //~ ERROR mismatched types | ^^^^^^ expected &str, found opaque type | = note: expected type `&str` found type `Boo` error[E0308]: mismatched types --> $DIR/no_revealing_outside_defining_module.rs:30:5 | LL | fn bomp() -> boo::Boo { | -------- expected `Boo` because of return type LL | "" //~ ERROR mismatched types | ^^ expected opaque type, found reference | = note: expected type `Boo` found type `&'static str` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0308`.