| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types |
| --> $DIR/suggest-return-closure.rs:1:17 |
| | |
| LL | fn fn_once() -> _ { |
| | ^ |
| | | |
| | not allowed in type signatures |
| | help: replace with an appropriate return type: `impl FnOnce()` |
| | |
| = note: for more information on `Fn` traits and closure types, see https://doc.rust-lang.org/book/ch13-01-closures.html |
| |
| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types |
| --> $DIR/suggest-return-closure.rs:13:16 |
| | |
| LL | fn fn_mut() -> _ { |
| | ^ |
| | | |
| | not allowed in type signatures |
| | help: replace with an appropriate return type: `impl FnMut(char)` |
| | |
| = note: for more information on `Fn` traits and closure types, see https://doc.rust-lang.org/book/ch13-01-closures.html |
| |
| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types |
| --> $DIR/suggest-return-closure.rs:31:13 |
| | |
| LL | fn fun() -> _ { |
| | ^ |
| | | |
| | not allowed in type signatures |
| | help: replace with an appropriate return type: `impl Fn() -> i32` |
| | |
| = note: for more information on `Fn` traits and closure types, see https://doc.rust-lang.org/book/ch13-01-closures.html |
| |
| error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable |
| --> $DIR/suggest-return-closure.rs:22:9 |
| | |
| LL | let x = String::new(); |
| | - help: consider changing this to be mutable: `mut x` |
| ... |
| LL | x.push(c); |
| | ^ cannot borrow as mutable |
| |
| error[E0597]: `x` does not live long enough |
| --> $DIR/suggest-return-closure.rs:22:9 |
| | |
| LL | |c| { |
| | --- value captured here |
| LL | x.push(c); |
| | ^ borrowed value does not live long enough |
| ... |
| LL | } |
| | -- borrow later used here |
| | | |
| | `x` dropped here while still borrowed |
| |
| error: aborting due to 5 previous errors |
| |
| Some errors have detailed explanations: E0121, E0596, E0597. |
| For more information about an error, try `rustc --explain E0121`. |