use std::path::PathBuf; use git_tempfile::{AutoRemove, ContainingDirectory}; fn main() -> std::io::Result<()> {    let filepath = PathBuf::new().join("writable-tempfile.ext");    let markerpath = PathBuf::new().join("marker.ext");    let _tempfile = git_tempfile::writable_at(&filepath, ContainingDirectory::Exists, AutoRemove::Tempfile)?;    let _markerfile = git_tempfile::mark_at(&markerpath, ContainingDirectory::Exists, AutoRemove::Tempfile)?;    eprintln!(        "Observe the tempfiles at {} and {} and hit Ctrl+C to see it vanish. I will go to sleep now…",        filepath.display(),        markerpath.display()    );    std::thread::sleep(std::time::Duration::from_secs(8 * 60 * 60));    Ok(())}