%Warning-ZERODLY: t/t_delay_var.v:20:7: Unsupported: #0 delays do not schedule process resumption in the Inactive region
   20 |       #0 in = 1'b1;
      |       ^
                  ... For warning description see https://verilator.org/warn/ZERODLY?v=latest
                  ... Use "/* verilator lint_off ZERODLY */" and lint_on around source to disable this message.
%Error: Exiting due to