Confused about error handling

main.rs

use std::process::Command;

fn main() {
    println!("{}", git_name().unwrap_or("".to_string()));
}

pub fn git_name() -> Option<String> {

    if let Ok(output) = Command::new("git")
                                .arg("config")
                                .arg("user.name")
                                .output()
    {

        if output.status.success() {
            let s = String::from_utf8_lossy(&output.stdout);

            print!("git config user.name: {}", s);
            Some(s.to_string())
        } else {
            let s = String::from_utf8_lossy(&output.stderr);

            print!("git config user.name failed! {}", s);
            None
        }
    } else {
        None
    }
}