In HSEARCH-3241 Resolved we accidentally started to use --illegal-access=deny everywhere, including on the client side of Arquillian-based tests, and unfortunately this doesn't work well.

I'm talking about this change: https://github.com/hibernate/hibernate-search/pull/1711/files#diff-881b582cba842911982d73736ad31393L34

... which caused this failure: http://ci.hibernate.org/view/Search/job/hibernate-search-master-jdk9/913/console