warning: zero-sized fields in repr(transparent) cannot contain external non-exhaustive types
 --> src/lib.rs:6:39
  |
6 | pub struct BOption<'id, T>(Option<T>, Id<'id>);
  |                                       ^^^^^^^
  |
  = note: `#[warn(repr_transparent_external_private_fields)]` on by default
  = 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 #78586 <https://github.com/rust-lang/rust/issues/78586>
  = note: this struct contains `Id<'id>`, which contains private fields, and makes it not a breaking change to become non-zero-sized in the future.