| error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants | |
| --> $DIR/call-const-trait-method-fail.rs:24:5 | |
| | | |
| LL | a.plus(b) | |
| | ^^^^^^^^^ | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0015`. |