error[E0277]: the trait bound `NonConstImpl: ~const ConstDefaultFn` is not satisfied --> $DIR/const-default-method-bodies.rs:24:18 | LL | NonConstImpl.a(); | ^ the trait `ConstDefaultFn` is not implemented for `NonConstImpl` | = help: the trait `ConstDefaultFn` is implemented for `NonConstImpl` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.