Bug in loophp/collection

test.php

<?php

/**
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

declare(strict_types=1);

include __DIR__ . '/vendor/autoload.php';

use loophp\collection\Collection;

$integers = static function (): array {
    $random = [random_int(0, 9)];

    return $random;
};

$c = Collection::unfold($integers)
    ->unwrap()
    ->distinct();

foreach ($c as $i) {
    dump($i);
}