| error[E0277]: expected a `Fn(char)` closure, found `char` |
| --> $DIR/root-obligation.rs:6:38 |
| | |
| LL | .filter(|c| "aeiou".contains(c)) |
| | -------- ^ expected an `Fn(char)` closure, found `char` |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `Fn<(char,)>` is not implemented for `char` |
| = note: required for `&char` to implement `FnOnce<(char,)>` |
| = note: required for `&char` to implement `Pattern<'_>` |
| note: required by a bound in `core::str::<impl str>::contains` |
| --> $SRC_DIR/core/src/str/mod.rs:LL:COL |
| help: consider dereferencing here |
| | |
| LL | .filter(|c| "aeiou".contains(*c)) |
| | + |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |