owning_ref vulnerable to multiple soundness issues

• OwningRef::map_with_owner is unsound and may result in a use-after-free.
• OwningRef::map is unsound and may result in a use-after-free.
• OwningRefMut::as_owner and OwningRefMut::as_owner_mut are unsound and may result in a use-after-free.
• The crate violates Rust's aliasing rules, which may cause miscompilations on recent compilers that emit the LLVM noalias attribute.

No patched versions are available at this time. While a pull request with some fixes is outstanding, the maintainer appears to be unresponsive.