Eloquent model factory makes 2 models when it should build 0

[etherealite]

• Laravel Version: 5.3.15
• PHP Version: 7.0.8-2+deb.sury.org~xenial+1 (cli) ( NTS )
• Database Driver & Version: Irrelevant

Description:

Eloquent model factories (the ones for seeding test data and such) that reside in database/factories/ModelFactory.php, have a strange behavior.
The FactoryBuilder::make() method makes multiple models even when FactoryBuilder::$amount
is set to 0.

Steps To Reproduce:

vagrant@homestead: php artisan tinker
Psy Shell v0.7.2 (PHP 7.0.8-2+deb.sury.org~xenial+1 — cli) by Justin Hileman
>>> factory(App\User::class, 0)->make();
=> Illuminate\Database\Eloquent\Collection {#704
     all: [
       App\User {#700
         name: "Emie Will",
         email: "nicolas.kathleen@example.org",
       },
       App\User {#687
         name: "Anna Jones",
         email: "eli76@example.org",
       },
     ],
   }

As per the above, one would expect the make() method to create an empty array or some other indicator that no models were created. Instead an array with 2 models is returned.