1error[E0277]: expected a `Fn<()>` closure, found `T`
2  --> $DIR/issue-68644-codegen-selection.rs:14:5
3   |
4LL |     type F<'a> = Self;
5   |     ^^^^^^^^^^^^^^^^^^ expected an `Fn<()>` closure, found `T`
6   |
7   = note: wrap the `T` in a closure with no arguments: `|| { /* code */ }`
8note: required by a bound in `Fun::F`
9  --> $DIR/issue-68644-codegen-selection.rs:6:17
10   |
11LL |     type F<'a>: Fn() -> u32;
12   |                 ^^^^^^^^^^^ required by this bound in `Fun::F`
13help: consider restricting type parameter `T`
14   |
15LL | impl<T: std::ops::Fn<()>> Fun for T {
16   |       ++++++++++++++++++
17
18error: aborting due to previous error
19
20For more information about this error, try `rustc --explain E0277`.
21