Rust program to check the status of Peercoin Airdrop wallets

main.rs

extern crate reqwest;
extern crate select;
extern crate serde_json;

use select::document::Document;
use select::predicate::{Name, Class, Predicate};
use serde_json::Value;
use std::fs::File;

fn address_used(address: &str) -> bool {
    let url = format!("https://explorer.peercoin.net/address/{}", address);
    let result = reqwest::get(&url).unwrap();
    let document = Document::from_read(result).unwrap();
    return document.find(Name("td").and(Class("danger"))).count() > 0;
}

fn main() {
    let file = File::open("/home/chapman/Documents/airdrop_wallet_data.json").unwrap();
    let data: Value = serde_json::from_reader(file).unwrap();
    let airdrops = data["airdrops"].as_array().unwrap();
    for a in airdrops {
        let a = a.as_object().unwrap();
        let address = a["address"].as_str().unwrap();
        println!("{}: {}", address, address_used(&address));
    }
}