Error Panic When using -a flag on MacOS

I compiled it using the release mode

Input: 
```
asm-cli-rust -a x86
```

Output:
```
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Unsupported', src/main.rs:46:48
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
```