error[E0277]: the trait bound `u32: ~const Plus` is not satisfied --> $DIR/call-const-trait-method-fail.rs:25:5 | LL | a.plus(b) | ^ the trait `~const Plus` is not implemented for `u32` | = help: the trait `Plus` is implemented for `u32` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.