anchor.diff:  
       i("start tcp (stream) socket"),
       ClientInitState1 = #{},
  -    #ev{pid = Pid1} = Client1 = evaluator_start("tcp-client", 
  -                                                ClientSeq, ClientInitState1),
  +    Client1 = evaluator_start("tcp-client", ClientSeq, ClientInitState1),
       TesterInitState1 = #{domain   => inet, 
                            type     => stream, 
                            protocol => tcp,
  -                         client   => Pid1},
  +                         client   => Client1#ev.pid},
       Tester1          = evaluator_start("tcp-tester", TesterSeq, TesterInitState1),
       i("await tcp evaluator"),
       ok = await_evaluator_finish([Tester1, Client1]),
   
       i("start udp (dgram) socket"),
       ClientInitState2 = #{},
  -    #ev{pid = Pid2} = Client2 = evaluator_start("udp-client", 
  -                                                ClientSeq, ClientInitState2),
  +    Client2 = evaluator_start("udp-client", ClientSeq, ClientInitState2),
       TesterInitState2 = #{domain   => inet, 
                            type     => dgram, 
                            protocol => udp,
  -                         client   => Pid2},
  +                         client   => Client2#ev.pid},
       Tester2          = evaluator_start("udp-tester", TesterSeq, TesterInitState2),
       i("await udp evaluator"),
       ok = await_evaluator_finish([Tester2, Client2]).
  
positive.code:      sc_lc_recv_response_tcp4,
       sc_lc_recv_response_tcp6,
  
       sc_lc_recvmsg_response_tcp4,
       sc_lc_recvmsg_response_tcp6,
  
       sc_lc_acceptor_response_tcp4,
       sc_lc_acceptor_response_tcp6
  
negative.code:          sc_cpe_socket_cleanup_udp6/1,
           sc_lc_recv_response_tcp4/1,
           sc_lc_recv_response_tcp6/1,
           sc_lc_recvfrom_response_udp4/1,
           sc_lc_recvfrom_response_udp6/1,
           sc_lc_recvmsg_response_tcp4/1,
           sc_lc_recvmsg_response_tcp6/1,
           sc_lc_recvmsg_response_udp4/1,
           sc_lc_recvmsg_response_udp6/1,
           sc_lc_acceptor_response_tcp4/1,
           sc_lc_acceptor_response_tcp6/1,
           sc_rc_recv_response_tcp4/1,
  