Laravel 5 Cron doesn't work - php

Question

I am not sure why cron doesn't for Laravel artisan commands. But when I launch it manually like php artisan my:command it works.
I have put command in Kernel:
protected function schedule(Schedule $schedule)
{
$schedule->command('my:command')->everyMinute();
}
Also when I run php artisan schedule:run it says: No scheduled commands are ready to run.
Crontab looks like this:
* * * * * php /project/artisan schedule:run
At first I thought maybe cron itself doesn't work, but it executes php files not related to artisan.
I am using PHP7 if it changes anything.
UPDATED (cron artisan commands work, but schedule dont)
Cron command works (log has been saved in storage/app folder)
* * * * * php /project/artisan command:test
Cron schedule doesn't work
* * * * * php /project/artisan schedule:run
test.php
namespace App\Console\Commands;
use Illuminate\Console\Command;
use Storage;
use Carbon\Carbon;
class test extends Command
{
protected $signature = 'command:test';
protected $description = 'Command description';
public function __construct()
{
parent::__construct();
}
public function handle()
{
Storage::prepend('test.log', Carbon::now());
}
}
Kernel.php
namespace App\Console;
use Illuminate\Console\Scheduling\Schedule;
use Illuminate\Foundation\Console\Kernel as ConsoleKernel;
class Kernel extends ConsoleKernel
{
protected $commands = [
Commands\test::class,
];
protected function schedule(Schedule $schedule)
{
$schedule->command('command:test')->everyMinute();
}
}