Auth::login($user) in laravel not able to login the user

I am using laravel 5.4 and Auth::login($user) is showing Type error: Argument 1 passed to Illuminate\Auth\SessionGuard::login() must implement interface Illuminate\Contracts\Auth\Authenticatable, instance of Illuminate\Database\Eloquent\Builder given, called in /home/vendor/laravel/framework/src/Illuminate/Auth/AuthManager.php on line 294

My User.php file is:

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
class User extends Authenticatable
{
use Notifiable;
/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
    'name', 'email', 'role', 'password',
];

/**
 * The attributes that should be hidden for arrays.
 *
 * @var array
 */
protected $hidden = [
    'password', 'remember_token',
];
}

My AuthController.php is:

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\User;
use Auth;
use Illuminate\Support\Facades\Input;
use \Hash;

class AuthController extends Controller
{
//
public function register(Request $request){
    $this->validate($request, [
        'name' => 'required|max:30',
        'email' => 'required|email|unique:users',
        'regpassword' => 'required|alpha_num|confirmed'
        ]);

    /*$user = new User();
    $user['name'] = $request['name'];
    $user['email'] = $request['email'];
    $user['password'] = bcrypt($request['password']);
    $user['role'] = 'user';
    $user->save();
    */
    $user = User::create(array(
        'email' => Input::get('email'),
        'name' => Input::get('name'),
        'password' => Hash::make(Input::get('password')),
        'role' => 'user'));
    return 'success';


 }

public function userLogin(Request $request){
    $this->validate($request,[
        'email' => 'required|email',
        'password' => 'required' 
        ]);

    $user = User::where('email', '=', $request['email'])-> where('password' ,'=', Hash::make($request['password']))->where('role','=','user');                                                    

    if($user){
        Auth::login($user); 
        return $next($request);
    }
    else{
        return redirect()->back();
    }


}
}

My web.php

Route::get('/', function () {
return view('welcome');
});

Auth::routes();

Route::get('/home', 'HomeController@index');
Route::post('/register', 'AuthController@register');
Route::post('/UserLogin','AuthController@userLogin');

via Lakshya Garg