error[E0277]: the trait bound `u32: std::ops::Add<()>` is not satisfied --> $DIR/multiline-span-simple.rs:23:9 | 23 | foo(1 as u32 + | _________^ 24 | | 25 | | bar(x, 26 | | 27 | | y), | |______________^ no implementation for `u32 + ()` | = help: the trait `std::ops::Add<()>` is not implemented for `u32` error: aborting due to previous error