Is there any way to get the line number of the code which caused the task panic

[tongacuity]

Hi folks,
I am a beginner rust and tokio user so I hope this is the right place to ask my question.
I am trying to get more information from the task when it's panicking.
What I really want to know the line number which caused the panic but I don't know how to get it from the tokio::task::JoinError
With below code, my println! only prints out Task panicked with info: Any { .. }
Is there any way to get the exactly line number which caused panic and print it out using println!?

#[tokio::main]
async fn main() {
    let handle = tokio::spawn(async {
        panic!("Panicking in the task");
    });    

    let result = handle.await;
    match result {
        Ok(_) => {}
        Err(e) => {
            if e.is_panic() {
                println!("Task panicked with info: {:?}", e.into_panic());
            }
        }   
    }
}

[mox692]

Is there any way to get the exactly line number

I think you could use custom panic handler by using set_hook.

use std::panic;

#[tokio::main]
async fn main() {
    panic::set_hook(Box::new(|panic_info| {
        if let Some(location) = panic_info.location() {
            println!("panic occurred in file '{:?}'", location);
        } else {
            println!("panic occurred but can't get location information...");
        }
    }));
    
    let handle = tokio::spawn(async {
        panic!("Panicking in the task");
    });    

    let result = handle.await;
    
    match result {
        Ok(_) => {}
        Err(e) => {
            if e.is_panic() {
                println!("Task panicked with info: {:?}", e);
            }
        }   
    }
}

EDIT: It seems that you got an answer in discord as well.

[tongacuity]

Hi @mox692,
Thanks for your response, the panic::set_hook works as expected but it does not contain information about the tokio task which panicked.
My goal is to get panic information from the tokio task to see which line of code caused the task panic. I need something like this: println!("Task {:?} panicked at file: {:?} and line {:?}", task_info, panic.location.file(), panic.location.line()) with the task_info is the JoinHandle returned by tokio::spawn. Do you have any suggestion to archive this?

Thank you.