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/api/corndog/src
    
    the code of the file until where you have to start completion: /*!
corndog is a delicious way to get at the meat inside the kernels.
It sets kernel-related settings, for example:
* sysctl values, based on key/value pairs in `set
    
fn usage() -> ! {
    let program_name = env::args().next().unwrap_or_else(|| "program".to_string());
    eprintln!(
        r"Usage: {} SUBCOMMAND [ ARGUMENTS... ]

    Subcommands:
        sysctl
        lockdown

    Global arguments:
        --config-path PATH
        --log-level trace|debug|info|warn|error

    Config path defaults to {}",
        program_name, DEFAULT_CONFIG_PATH,
    );
    process::exit(2);
}