nitter.net robots.txt parsing

Nitter.net has robots.txt file. Http response status is 200.
Robots size is very small. It is about 9 kb and 5 rows.

The Domain is inaccessible for indexation by search robots because robots.txt has directive "Disallow: /".

Host directive is not presented for domain nitter.net in robots.txt file.

Array
(
    [*] => Array
        (
            [disallow] => Array
                (
                    [0] => /
                )

            [crawl-delay] => 1
        )

    [twitterbot] => Array
        (
        )

)

User-agent: *
Disallow: /
Crawl-delay: 1
User-agent: Twitterbot
Disallow:

код 308 http://nitter.net/robots.txt
код 200 https://nitter.net/robots.txt