prove --exec perl6 -r t -I lib/
t/make-agent.t .. 1/2 Use of Nil in string context
  in method add-dependency at /home/erana/perl6/AI-Agent/lib/AI/Agent/HashedAgent.pm6 (AI::Agent::HashedAgent) line 16
Use of Nil in string context
  in method add-dependency at /home/erana/perl6/AI-Agent/lib/AI/Agent/HashedAgent.pm6 (AI::Agent::HashedAgent) line 16
Use of Nil in string context
  in method add-dependency at /home/erana/perl6/AI-Agent/lib/AI/Agent/HashedAgent.pm6 (AI::Agent::HashedAgent) line 16
Use of Nil in string context
  in method add-dependency at /home/erana/perl6/AI-Agent/lib/AI/Agent/HashedAgent.pm6 (AI::Agent::HashedAgent) line 16
t/make-agent.t .. ok
All tests successful.
Files=1, Tests=2,  2 wallclock secs ( 0.13 usr  0.01 sys +  2.55 cusr  0.19 csys =  2.88 CPU)
Result: PASS