Null-pointer dereference and double-free via safe APIs

Two soundness violations exist in the Rust bindings for MetaCall: Null-pointer dereference: MetaCallFuture::newraw accepts a raw pointer without validation. The Debug impl calls Box::fromrawself.data on it. Passing a null pointer causes the Debug impl to construct a NonNull from null, producing...

RUSTSEC-2026-0128 Double-free and use-after-free in `Keys::next()`

Keys::next uses ptr::read to move out the Option by value, which drops the contained V when V is non-Copy e.g. String. This leaves a dangling value in the map's storage slot. Subsequent get operations on that key return a dangling reference to already-freed memory. This can be triggered through...