| error[E0277]: the size for values of type `(dyn std::ops::FnOnce() + 'static)` cannot be known at compilation time |
| --> $DIR/feature-gate-unsized_locals.rs:1:6 |
| | |
| LL | fn f(f: dyn FnOnce()) {} |
| | ^ doesn't have a size known at compile-time |
| | |
| = help: the trait `std::marker::Sized` is not implemented for `(dyn std::ops::FnOnce() + 'static)` |
| = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait> |
| = note: all local variables must have a statically known size |
| = help: unsized locals are gated as an unstable feature |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
