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/roapi/roapi/src
    
    the code of the file until where you have to start completion: #![deny(warnings)]

use roapi::config::get_configuration;
use roapi::startup::Application;
use snafu::{whatever, Whatever};

#[cfg(snmalloc)]
#[global_allocator]
static ALLOC: snmalloc_rs::SnMalloc = snmalloc_rs::SnMalloc;

#[tokio::main]
async fn main() -> Result<(), Whatever> {
    env_logger::Builder::from_env(env_logger::Env::default(
    
async fn main() -> Result<(), Whatever> {
    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();

    let config = whatever!(get_configuration(), "Failed to load configuration");
    let application = Application::build(config)
        .await
        .expect("Failed to build App");
    application
        .run_until_stopped()
        .await
        .expect("Failed to run App");
    Ok(())
}