docs: add --release warning for Rust debugging

Author: alexcasalboni

component-model/src/language-support/rust.md

@@ -90,6 +90,8 @@ Now, use `cargo component` to build the component, being sure to optimize with a
 cargo component build --release
 ```
 
+> **WARNING:** Building with `--release` removes all debug-related information from the resulting .wasm file. When prototyping or testing locally, you might want to avoid `--release` to obtain useful backtraces in case of errors (for example, with `wasmtime::WasmBacktraceDetails::Enable`). Note: the resulting .wasm file will be considerably larger (likely 4MB+).
+
 You can use `wasm-tools component wit` to output the WIT package of the component:
 
 ```