[Arnavion]

You can use a custom `#[panic_handler]` item that ignores its `PanicInfo` arg and just aborts. The optimizer should notice that it doesn't need to bother with unique messages. However currently this requires either being a no_std program or compiling libstd without its handler, since otherwise its handler will conflict with yours.

Although, if one is building their own libstd anyway, then I believe compiling with `--build-std-features panic_immediate_abort` should also have the same effect.