catch panics in rust

main.rs

fn main() {
    // Set up a panic hook to print the backtrace
    std::panic::set_hook(Box::new(|info| {
        let mut message = String::new();
        message.push_str(&format!("thread '{}' ", std::thread::current().name().unwrap_or("unknown")));
        message.push_str(&format!("{}", info));
        if let Ok(var) = std::env::var("RUST_BACKTRACE") {
            if var == "1" {
                let backtrace = std::backtrace::Backtrace::capture();
                message.push_str(&format!("{}", backtrace));
            }
        }
        eprintln!("{}", message)
        // do whatever with the message
    }));
    panic!("Oh no!");
}