use tracing::Instrument;
async fn add(a: i32, b: i32) {
tracing::info!("result: {}", a + b);
}
#[tokio::main]
async fn main() {
traceon::builder().on();
let span = tracing::info_span!("math_functions", package_name = env!("CARGO_PKG_NAME",));
add(5, 10).instrument(span).await;
}