Building a REST API with Rust, Rocket and Diesel - handler all function

handler.rs

#[get("/")]
fn all(connection: DbConn) -> Result<Json<Vec<Person>>, Failure> {
    people::repository::all(&connection)
        .map(|people| Json(people))
        .map_err(|error| error_status(error))
}

fn error_status(error: Error) -> Failure {
    Failure(match error {
        Error::NotFound => Status::NotFound,
        _ => Status::InternalServerError
    })
}