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: lib.rs
    path of file: ./repos/rediSQL/telemetrics/src
    
    the code of the file until where you have to start completion: #[macro_use]
extern crate log;

use std::cmp::{max, min};
use std::thread;
use std::time;

use redisql_lib::statistics::STATISTICS;

static PRIMARY_TELEMETRICS_URL: &str =
    "https://telemetrics.redisql.com/v0/statistics";
static SECONDARY_TELEMETRICS_URL: &str =
    "https://telemetrics.redisql.redbeardlab.com/v0/statistics";
static TERTIARY_TELEMETRICS_URL: &str =
    "http://telemetrics.redisql.redbeardlab.com/v0/statistics";

// use of a leaky-bucket like algo.
// first connect to the endpoint and make bucket
    
fn send_telemetrics() -> Result<(), ()> {
    let json_telemetrics = match STATISTICS.serialize() {
        Ok(s) => s,
        Err(_) => {
            warn!("Error in getting the stats!");
            return Err(());
        }
    };
    for url in &[
        PRIMARY_TELEMETRICS_URL,
        SECONDARY_TELEMETRICS_URL,
        TERTIARY_TELEMETRICS_URL,
    ] {
        let res = ureq::post(*url)
            .timeout_connect(5_000)
            .timeout_read(5_000)
            .send_string(&json_telemetrics.clone());
        match res.ok() {
            false => {
                let err = match res.into_string() {
                    Ok(ok) => ok,
                    Err(e) => e.to_string(),
                };
                warn!(
                    "Error in making the request to {}: {}",
                    *url, err
                );
            }
            true => {
                return Ok(());
            }
        }
    }
    Err(())
}