async.js forEach block

gistfile1.js

var doTask = function (value, callback) {
    setTimeout(callback(value), 10);
};

var list_count = 100000;
var check_count = list_count / 10;
var list = [];
for (var i = 0; i < list_count; i++) list.push(i);


var http = require('http');
var async = require('async');

http.createServer(function (request, response) {
    response.end('HTTP Response OK.');
}).listen(3000);

(function OtherTask() {
    console.log('Other task.');
    process.nextTick(OtherTask);
})();


(function EachTest() {
    async.forEach(list, function (v, next) {
        doTask(v, function (result) {
            if ((result % check_count) == 0) {
                console.log('doTask: ' + result);
            }
        });
        next();
    }, function (err) {
        if (err) console.log(err);
    });

    console.log('Done.');

    process.nextTick(EachTest);
})();