error[E0308]: mismatched types
  --> $DIR/issue-24446.rs:12:31
   |
LL |       static foo: Fn() -> u32 = || -> u32 {
   |  _______________________________^
LL | |         //~^ ERROR mismatched types
LL | |         //~| ERROR the size for values of type
LL | |         0
LL | |     };
   | |_____^ expected trait std::ops::Fn, found closure
   |
   = note: expected type `(dyn std::ops::Fn() -> u32 + 'static)`
              found type `[closure@$DIR/issue-24446.rs:12:31: 16:6]`

error[E0277]: the size for values of type `(dyn std::ops::Fn() -> u32 + 'static)` cannot be known at compilation time
  --> $DIR/issue-24446.rs:12:31
   |
LL |       static foo: Fn() -> u32 = || -> u32 {
   |  _______________________________^
LL | |         //~^ ERROR mismatched types
LL | |         //~| ERROR the size for values of type
LL | |         0
LL | |     };
   | |_____^ doesn't have a size known at compile-time
   |
   = help: the trait `std::marker::Sized` is not implemented for `(dyn std::ops::Fn() -> u32 + 'static)`
   = note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
   = note: constant expressions must have a statically known size

error: aborting due to 2 previous errors

Some errors occurred: E0277, E0308.
For more information about an error, try `rustc --explain E0277`.