%Error: t/t_select_bad_range5.v:16:19: Illegal bit or array select; type does not have a bit range, or bad dimension: data type is 'logic'
                                     : ... note: In instance 't'
   16 |    assign mi = unk[3:2];
      |                   ^
%Warning-SELRANGE: t/t_select_bad_range5.v:16:19: Extracting 2 bits from only 1 bit number
                                                : ... note: In instance 't'
   16 |    assign mi = unk[3:2];
      |                   ^
                   ... For warning description see https://verilator.org/warn/SELRANGE?v=latest
                   ... Use "/* verilator lint_off SELRANGE */" and lint_on around source to disable this message.
%Warning-SELRANGE: t/t_select_bad_range5.v:16:19: Selection index out of range: 3:2 outside 1:0
                                                : ... note: In instance 't'
   16 |    assign mi = unk[3:2];
      |                   ^
%Warning-WIDTHEXPAND: t/t_select_bad_range5.v:16:19: Bit extraction of var[3:0] requires 2 bit index, not 1 bits.
                                                   : ... note: In instance 't'
   16 |    assign mi = unk[3:2];
      |                   ^
%Warning-WIDTHTRUNC: t/t_select_bad_range5.v:16:14: Operator ASSIGNW expects 1 bits on the Assign RHS, but Assign RHS's SEL generates 2 bits.
                                                  : ... note: In instance 't'
   16 |    assign mi = unk[3:2];
      |              ^
%Error: Exiting due to