%Error-WIDTHTRUNC: t/t_flag_werror.v:10:19: Operator ASSIGNW expects 4 bits on the Assign RHS, but Assign RHS's CONST '6'h2e' generates 6 bits.
                                          : ... note: In instance 't'
   10 |    wire [3:0] foo = 6'h2e;
      |                   ^
                   ... For error description see https://verilator.org/warn/WIDTHTRUNC?v=latest
%Error: Exiting due to