error[E0277]: `()` cannot be safely transmuted into `u8` in the defining scope of `should_have_correct_size::Context`. --> $DIR/unit.rs:28:35 | LL | assert::is_transmutable::<(), u8, Context>(); | ^^ `()` cannot be safely transmuted into `u8` in the defining scope of `should_have_correct_size::Context`. | = help: the trait `BikeshedIntrinsicFrom<(), should_have_correct_size::Context, Assume { alignment: true, lifetimes: true, safety: true, validity: true }>` is not implemented for `u8` note: required by a bound in `is_transmutable` --> $DIR/unit.rs:12:14 | LL | pub fn is_transmutable() | --------------- required by a bound in this function LL | where LL | Dst: BikeshedIntrinsicFrom | |__________^ required by this bound in `is_transmutable` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.