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/bottlerocket/sources/metricdog/src
    
    the code of the file until where you have to start completion: #![deny(unused_imports)]

/*!
# Introduction

Metricdog sends anonymous information about the health of a Bottlerocket host.
It does so by sending key-value pairs as query params in an HTTP GET request.

Metricdog also has the ability to check that a list of critical services is running.
It does so using `systemctl` and reports services that are not he
    
fn main() -> ! {
    let args: Arguments = argh::from_env();
    SimpleLogger::init(args.log_level, LogConfig::default()).expect("unable to configure logger");
    let systemd_check = SystemdCheck {};
    process::exit(
        match main_inner(args, Box::new(systemd_check), Box::new(systemd_check)) {
            Ok(()) => 0,
            Err(err) => {
                eprintln!("{}", err);
                1
            }
        },
    )
}