nodejs cheerio每个功能不起作用

Question

尝试学习网页抓取。我无法将此代码输出到控制台。我不确定自己在做什么错。

let request = require("request");
let cheerio = require("cheerio");

let url = "https://stackoverflow.com/";

request(url, function(err, res, body) {
    if (!err) {
        let $ = cheerio.load(url);
        let listingsQ = $("#question-mini-list").children();
        listingsQ.each(function(index) {
            console.log(index);

        });

    } else {
        console.log("err")
    }
});