error[E0277]: the trait bound `S: Clone` is not satisfied in `[closure@$DIR/not-clone-closure.rs:7:17: 7:24]` --> $DIR/not-clone-closure.rs:11:23 | LL | let hello = move || { | ------- within this `[closure@$DIR/not-clone-closure.rs:7:17: 7:24]` ... LL | let hello = hello.clone(); | ^^^^^ within `[closure@$DIR/not-clone-closure.rs:7:17: 7:24]`, the trait `Clone` is not implemented for `S` | note: required because it's used within this closure --> $DIR/not-clone-closure.rs:7:17 | LL | let hello = move || { | ^^^^^^^ help: consider annotating `S` with `#[derive(Clone)]` | LL + #[derive(Clone)] LL | struct S(i32); | error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.