%Warning-SPECIFYIGN: t/t_gate_basic.v:50:27: Ignoring unsupported: specify block construct
   50 |       (nt0 *> nt0) = (0, 0);
      |                           ^
                     ... For warning description see https://verilator.org/warn/SPECIFYIGN?v=latest
                     ... Use "/* verilator lint_off SPECIFYIGN */" and lint_on around source to disable this message.
%Warning-SPECIFYIGN: t/t_gate_basic.v:60:32: Ignoring unsupported: specify block construct
   60 |     (A1 *> Q) = (a$A1$Y, a$A1$Y);
      |                                ^
%Error-NEEDTIMINGOPT: t/t_gate_basic.v:24:10: Use --timing or --no-timing to specify how timing controls should be handled
                                            : ... note: In instance 't'
   24 |    not   #(0.108) NT0 (nt0, a[0]);
      |          ^
                      ... For error description see https://verilator.org/warn/NEEDTIMINGOPT?v=latest
%Error-NEEDTIMINGOPT: t/t_gate_basic.v:25:10: Use --timing or --no-timing to specify how timing controls should be handled
                                            : ... note: In instance 't'
   25 |    and   #1       AN0 (an0, a[0], b[0]);
      |          ^
%Error-NEEDTIMINGOPT: t/t_gate_basic.v:26:10: Use --timing or --no-timing to specify how timing controls should be handled
                                            : ... note: In instance 't'
   26 |    nand  #(2,3)   ND0 (nd0, a[0], b[0], b[1]);
      |          ^
%Error: Exiting due to