1 error[E0277]: cannot add `()` to `u32`
2 --> $DIR/multiline-span-simple.rs:13:18
5 | ^ no implementation for `u32 + ()`
7 = help: the trait `Add<()>` is not implemented for `u32`
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0277`.