error[E0308]: mismatched types --> $DIR/issue-37788.rs:8:5 | LL | fn main() { | - expected `()` because of default return type LL | // Test that constructing the `visible_parent_map` (in `cstore_impl.rs`) does not ICE. LL | std::cell::Cell::new(0) | ^^^^^^^^^^^^^^^^^^^^^^^- help: consider using a semicolon here: `;` | | | expected `()`, found `Cell<{integer}>` | = note: expected unit type `()` found struct `Cell<{integer}>` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0308`.