error[E0277]: the trait bound `Something: Termination` is not satisfied --> $DIR/issue-103052-2.rs:15:22 | LL | fn main() -> Something { | ^^^^^^^^^ the trait `Termination` is not implemented for `Something` | note: required by a bound in `Main::{opaque#0}` --> $DIR/issue-103052-2.rs:9:27 | LL | fn main() -> impl std::process::Termination; | ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Main::{opaque#0}` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.