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: main.rs
    path of file: ./repos/rustlings/src
    
    the code of the file until where you have to start completion: use crate::exercise::{Exercise, ExerciseList};
use crate::project::RustAnalyzerProject;
use crate::run::{reset, run};
use crate::verify::verify;
use clap::{Parser, Subcommand};
use console::Emoji;
use notify_debouncer_mini::notify::{self, RecursiveMode};
use notify_debouncer_mini::{new_debouncer, DebouncedEventKind};
use std::ffi::OsStr;
use std::fs;
use std::io::{self, prelude::*};
use std::path::Path;
use std::process::{Command, Stdio};
use std::sync::atomic::{AtomicBo
    
fn find_exercise<'a>(name: &str, exercises: &'a [Exercise]) -> &'a Exercise {
    if name.eq("next") {
        exercises
            .iter()
            .find(|e| !e.looks_done())
            .unwrap_or_else(|| {
                println!("ðŸŽ‰ Congratulations! You have done all the exercises!");
                println!("ðŸ”š There are no more exercises to do next!");
                std::process::exit(1)
            })
    } else {
        exercises
            .iter()
            .find(|e| e.name == name)
            .unwrap_or_else(|| {
                println!("No exercise found for '{name}'!");
                std::process::exit(1)
            })
    }
}