error: the trait `AsBytes` cannot be made into an object
 --> zerocopy-0.7.0-alpha.2/src/lib.rs:608:8
  |
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
  = note: for more information, see issue #51443 <https://github.com/rust-lang/rust/issues/51443>
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
 --> zerocopy-0.7.0-alpha.2/src/lib.rs:608:8
  |
  = note: the trait cannot be made into an object because method `as_bytes_mut` references the `Self` type in its `where` clause