Rust初学者在这里，只是做一些学习项目，我遇到了path does not live long enough错误。我试图找到答案，但没有一个能帮助我理解我的核心问题。我尝试了多种方法来修复，但没有任何帮助。
代码行match Path::new(&path).extension().and_then(OsStr::to_str){抛出上述错误。当我删除这行langs.insert(ext, 1);代码时，错误就消失了。我不明白为什么那条线会引起所有的问题？？

main.rs（playground）

fn iterate_files(path: String, langs: &mut HashMap<&str, u16>){
    let files = fs::read_dir(&path);
    match &files{
        Ok(_) => {
            for file in files.unwrap(){
                let path: PathBuf = file.unwrap().path();
                let string_path: String = path.display().to_string();
                let temp = Path::new(&string_path).file_name().unwrap();
                if is_safe_to_iterate(temp){
                    continue;
                }
                
                match Path::new(&path).extension().and_then(OsStr::to_str){
                    None => {
                        iterate_files(string_path, langs);
                        continue;
                    },
                    Some(text) => {
                        let ext: &str = text;
                        if langs.contains_key(ext){
                            langs.insert(ext, 1);
                        }
                    }
                }

                println!("{}", path.display());
            }
        },
        Err(_) => {
            println!("Illegal File Encountered booom!! {}", path);
        },
    }
}

字符串
完整错误消息：

error[E0597]: `path` does not live long enough
  --> src/lib.rs:24:33
   |
12 | fn iterate_files(path: String, langs: &mut HashMap<&str, u16>) {
   |                                                    - let's call the lifetime of this reference `'1`
...
24 |                 match Path::new(&path).extension().and_then(OsStr::to_str) {
   |                                 ^^^^^ borrowed value does not live long enough
...
32 |                             langs.insert(ext, 1);
   |                             -------------------- argument requires that `path` is borrowed for `'1`
...
38 |             }
   |             - `path` dropped here while still borrowed

For more information about this error, try `rustc --explain E0597`.
error: could not compile `playground` due to previous error

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