Others have pinpointed the problem of not taking and passing an array reference. Just for grins, run the OPed code without strictures asserted, e.g.,
    # use v5.16.3;
    # use strict;
(the  use v5.16.3; statement has to be commented out because IIRC use-ing Perl version 5.16+ automatically asserts strictures), and see what happens. Note that you can still assert warnings. Is there necessarily any hint that something might be going wrong?