ver5.7.2.1 install Failed

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Nginx: 1.7.8
HHVM: 3.2.0
MariaDB: 10.0.15

Installation on HHVM fails with the following error.

Argument 1 passed to Concrete\Core\Permission\Access\Access::create() must be an instance of PermissionKey, Concrete\Core\Permission\Key\AdminKey given.


Is there something better way?