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/rust-cli-boilerplate/template/src
    
    the code of the file until where you have to start completion: /*! TODO: Application description here

This file provided by [rust-cli-boilerplate](https://github.com/ssokolow/rust-cli-boilerplate)
*/
// Copyright 2017-2020, Stephan Sokolow

// Make rustc's built-in lints more strict and set clippy into a whitelist-based configuration so
// we see new lints as they get written, then opt out of ones we have seen and don't want
#![warn(warnings, rust_2018_idioms)]
#![warn(clippy::all, clippy::pedantic, clippy::restriction)]
#![allow(clippy::float_arithmetic, clippy::implicit_return, clippy::needless_return)]
#![forbid(unsafe_code)] // Enforce my policy of only allowing it in my own code as a last resort

// stdlib imports
use std::convert::TryInto;
use std::io;

// 3rd-party imports
use anyhow::{Context, Result};
use structopt::{clap, StructOpt};

// Local imports
mod app;
mod helpers;
mod validators;

/// Boilerplate to parse command-line arguments, set up logging, and handle bubbled-up `Error`s.
///
/// See `app::main` for the application-specific logic.
fn main() -> Result<()> {
    // Parse command-line arguments (exiting on parse error, --version, or --help)
    let opts = app::CliOpts::from_args();

    // Configure logging output so that -q is "decrease verbosity" rather than instant silence
    let verbosity = opts
        .boilerplate
        .verbose
        .saturating_add(app::DEFAULT_VERBOSITY)
        .saturating_sub(
    
fn main() -> Result<()> {
    // Parse command-line arguments (exiting on parse error, --version, or --help)
    let opts = app::CliOpts::from_args();

    // Configure logging output so that -q is "decrease verbosity" rather than instant silence
    let verbosity = opts
        .boilerplate
        .verbose
        .saturating_add(app::DEFAULT_VERBOSITY)
        .saturating_sub(opts.boilerplate.quiet);

    stderrlog::new()
        .module(module_path!())
        .quiet(verbosity == 0)
        .verbosity(verbosity.saturating_sub(1).try_into().context("Verbosity too high")?)
        .timestamp(opts.boilerplate.timestamp.unwrap_or(stderrlog::Timestamp::Off))
        .init()
        .context("Failed to initialize logging output")?;

    // If requested, generate shell completions and then exit with status of "success"
    if let Some(shell) = opts.boilerplate.dump_completions {
        app::CliOpts::clap().gen_completions_to(
            app::CliOpts::clap().get_bin_name().unwrap_or_else(|| clap::crate_name!()),
            shell,
            &mut io::stdout(),
        );
        Ok(())
    } else {
        // Run the actual `main` and rely on `impl Termination` to provide a simple, concise way to
        // allow terminal errors that can be changed later as needed but starts out analogous to
        // letting an unhandled exception bubble up in something like Python.
        // TODO: Experiment with this and look for ways to polish it up further
        app::main(opts)
    }
}