Error saat migrate laravel

Assalamualaikum wr.wb .. Saya mendapatkan error ini saat saya mencoba 'php artisan migrate' di linux ubuntu 17.04 .. Sebelumnya saya sudah mencoba di windows dan tidak ada error sama sekali.

Berikut errornya

  [Illuminate\Database\QueryException]
  SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint (SQL
  : alter table `users` add constraint `users_role_id_foreign` foreign key (`
  role_id`) references `roles` (`id`))



  [PDOException]
  SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint

Berikut migration table users saya

 <?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateUsersTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('users', function (Blueprint $table) {
            $table->engine = 'InnoDB';
            $table->increments('id');
            $table->string('name');
            $table->string('email')->unique();
            $table->string('reset_email')->nullable();

            $table->text('description')->nullable();
            $table->string('facebook')->nullable();
            $table->string('twitter')->nullable();
            $table->string('instagram')->nullable();

            $table->integer('verification')->default(0);
            $table->integer('status')->default(0);
            $table->integer('role_id')->unsigned();
            $table->integer('title_id')->unsigned();

            $table->string('password');
            $table->rememberToken();
            $table->timestamps();

        });
        Schema::table('users', function (Blueprint $table) {
            $table->foreign('role_id')->references('id')->on('roles');
            $table->foreign('title_id')->references('id')->on('titles');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('users');
    }
}

Berikut migration table titles saya

 <?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateTitlesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('titles', function (Blueprint $table) {
            $table->integer('id');
            $table->string('name');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateTitlesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('titles', function (Blueprint $table) {
            $table->integer('id');
            $table->string('name');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('titles');
    }
}

    public function down()
    {
        Schema::dropIfExists('titles');
    }
}

Berikut migration table roles saya

 <?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateRolesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('roles', function (Blueprint $table) {
            $table->integer('id');
            $table->string('name');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('roles');
    }
}

Mohon bantuannya, terima kasih sebelumya Wassalam..