You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: iron.rs
    path of file: ./repos/multipart/examples
    
    the code of the file until where you have to start completion: extern crate multipart;
extern crate iron;

extern crate env_logger;

use std::io::{self, Write};
use multipart::mock::StdoutTee;
use multipart::server::{Multipart, Entries, SaveResult};
use iron::prelude::*;
use iron::status;

fn main() {
    env_logger::init();

    Iron::new(process_request).http("localhost:80").expect("Could not bind localhost:80");
}

/// Processes a request and ret
    
fn process_entries(entries: Entries) -> IronResult<Response> {
    let mut data = Vec::new();

    {
        let stdout = io::stdout();
        let tee = StdoutTee::new(&mut data, &stdout);
        entries.write_debug(tee).map_err(|e| {
            IronError::new(
                e,
                (status::InternalServerError, "Error printing request fields")
            )
        })?;
    }

    let _ = writeln!(data, "Entries processed");

    Ok(Response::with((status::Ok, data)))
}