error[E0277]: the trait bound `UnsafeEnum: UnsafeAuto` is not satisfied --> $DIR/auto-traits.rs:24:22 | LL | impl_unsafe_auto(UnsafeEnum::Safe(42)); | ---------------- ^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound | | | required by a bound introduced by this call | help: the trait `UnsafeAuto` is not implemented for `UnsafeEnum` --> $DIR/auto-traits.rs:9:1 | LL | enum UnsafeEnum { | ^^^^^^^^^^^^^^^ note: required by a bound in `impl_unsafe_auto` --> $DIR/auto-traits.rs:20:29 | LL | fn impl_unsafe_auto(_: impl UnsafeAuto) {} | ^^^^^^^^^^ required by this bound in `impl_unsafe_auto` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.