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eceb48534a
```
error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
--> $DIR/in-signature.rs:6:21
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LL | fn arr_fn() -> [u8; _] {
| ^ not allowed in type signatures
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help: replace with the correct return type
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LL - fn arr_fn() -> [u8; _] {
LL + fn arr_fn() -> [u8; 3] {
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```
71 lines
2.2 KiB
Plaintext
71 lines
2.2 KiB
Plaintext
error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
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--> $DIR/suggest-return-closure.rs:1:17
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LL | fn fn_once() -> _ {
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| ^ not allowed in type signatures
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= note: for more information on `Fn` traits and closure types, see https://doc.rust-lang.org/book/ch13-01-closures.html
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help: replace with an appropriate return type
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LL - fn fn_once() -> _ {
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LL + fn fn_once() -> impl FnOnce() {
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error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
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--> $DIR/suggest-return-closure.rs:13:16
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LL | fn fn_mut() -> _ {
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| ^ not allowed in type signatures
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= note: for more information on `Fn` traits and closure types, see https://doc.rust-lang.org/book/ch13-01-closures.html
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help: replace with an appropriate return type
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LL - fn fn_mut() -> _ {
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LL + fn fn_mut() -> impl FnMut(char) {
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error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
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--> $DIR/suggest-return-closure.rs:33:13
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LL | fn fun() -> _ {
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| ^ not allowed in type signatures
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= note: for more information on `Fn` traits and closure types, see https://doc.rust-lang.org/book/ch13-01-closures.html
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help: replace with an appropriate return type
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LL - fn fun() -> _ {
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LL + fn fun() -> impl Fn() -> i32 {
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error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable
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--> $DIR/suggest-return-closure.rs:24:9
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LL | x.push(c);
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| ^ cannot borrow as mutable
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help: consider changing this to be mutable
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LL | let mut x = String::new();
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| +++
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error[E0597]: `x` does not live long enough
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--> $DIR/suggest-return-closure.rs:24:9
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LL | let x = String::new();
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| - binding `x` declared here
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...
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LL | |c| {
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| --- value captured here
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LL | x.push(c);
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| ^ borrowed value does not live long enough
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...
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LL | }
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| -- borrow later used here
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| |
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| `x` dropped here while still borrowed
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error: aborting due to 5 previous errors
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Some errors have detailed explanations: E0121, E0596, E0597.
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For more information about an error, try `rustc --explain E0121`.
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