error[E0277]: `B` cannot be safely transmuted into `A` in the defining scope of `assert::Context` --> $DIR/recursive-wrapper-types-bit-incompatible.rs:24:49 | LL | assert::is_maybe_transmutable::<&'static B, &'static A>(); | ^^^^^^^^^^ At least one value of `B` isn't a bit-valid value of `A` | note: required by a bound in `is_maybe_transmutable` --> $DIR/recursive-wrapper-types-bit-incompatible.rs:10:14 | LL | pub fn is_maybe_transmutable() | --------------------- required by a bound in this function LL | where LL | Dst: BikeshedIntrinsicFrom | |__________^ required by this bound in `is_maybe_transmutable` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.