1 error[E0277]: cannot add `()` to `usize`
2 --> $DIR/issue-13352.rs:7:13
4 LL | 2_usize + (loop {});
5 | ^ no implementation for `usize + ()`
7 = help: the trait `Add<()>` is not implemented for `usize`
8 = help: the following other types implement trait `Add<Rhs>`:
11 <&'a i128 as Add<i128>>
16 <&'a isize as Add<isize>>
19 error: aborting due to previous error
21 For more information about this error, try `rustc --explain E0277`.