Wasmtime has use-after-free bug after cloning `wasmtime::Linker`

Impact In version 43.0.0 of the wasmtime crate, cloning a wasmtime::Linker is unsound and can result in use-after-free bugs. This bug is not controllable by guest Wasm programs. It can only be triggered by a specific sequence of embedder API calls made by the host. The typical symptom of this...