Hi,

I am blocking of this problem of borrow for a moment now... Maybe you can see the problem to help me ? I tried to clone some value but each time, an error occurs in compilation...
I just wanted to have a function that can give the full path of a file without its extension in directories and subdirectories.
(I think file_stem is not the full path, but I can manage after with a path join...)

For example : 
rootDir
...dir1
......file.conf
......file.other
......dir1.2
..........file2.conf

I would like to get : 
rootDir/dir1/file
rootDir/dir1/dir1.2/file2

use std::ffi::OsStr;
use std::fs::{self, metadata};
use std::{
    io,
    path::{Path, PathBuf},
};

fn get_filename_without_extension(path: &PathBuf) -> Option<&str> {
    path.file_stem().and_then(OsStr::to_str)
}

fn get_all_file_name(vec: &mut Vec<&str>, path: &Path) -> io::Result<()> {
    eprintln!("CALL WITH {:#?}", path);
    let paths = fs::read_dir(&path)?;
    for path_result in paths {
        let full_path = path_result?.path();
        if metadata(&full_path)?.is_dir() {
            get_all_file_name(vec, &full_path)?
        } else {
            match full_path.extension() {
                Some(ext) if ext == "conf" => {
                    if let Some(name) = get_filename_without_extension(&full_path) {
                        vec.push(name.clone());
                    }
                }
                Some(e) => eprintln!("EXT {:#?}", e),
                _ => (),
            }
        }
    }

    for f in vec {
        eprintln!("### {:#?}", f);
    }
    Ok(())
}

fn main() {
    //io::Result<Vec<PathBuf>> {
    let mut vec = Vec::new();
    get_all_file_name(&mut vec, &PathBuf::from("."));
}

(Playground)

Errors:

   Compiling playground v0.0.1 (/playground)
error[E0597]: `full_path` does not live long enough
  --> src/main.rs:22:72
   |
12 | fn get_all_file_name(vec: &mut Vec<&str>, path: &Path) -> io::Result<()> {
   |                                    - let's call the lifetime of this reference `'1`
...
16 |         let full_path = path_result?.path();
   |             --------- binding `full_path` declared here
...
22 |                     if let Some(name) = get_filename_without_extension(&full_path) {
   |                                                                        ^^^^^^^^^^ borrowed value does not live long enough
23 |                         vec.push(name.clone());
   |                         ---------------------- argument requires that `full_path` is borrowed for `'1`
...
30 |     }
   |     - `full_path` dropped here while still borrowed

For more information about this error, try `rustc --explain E0597`.
error: could not compile `playground` (bin "playground") due to 1 previous error

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