rust/tests/ui/issues/issue-23966.stderr
2023-11-02 20:57:05 +00:00

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error[E0277]: expected a `FnMut(_, char)` closure, found `()`
--> $DIR/issue-23966.rs:2:32
|
LL | "".chars().fold(|_, _| (), ());
| ---- ^^ expected an `FnMut(_, char)` closure, found `()`
| |
| required by a bound introduced by this call
|
= help: the trait `FnMut<(_, char)>` is not implemented for `()`
note: required by a bound in `fold`
--> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.