Wide character in print at t/nchar_test_lib.pl line 134 (#1)
   (W utf8) Perl met a wide character (>255) when it wasn't expecting
   one.  This warning is by default on for I/O (like print).  The easiest
   way to quiet this warning is simply to add the :utf8 layer to the
   output, e.g. binmode STDOUT, ':utf8'.  Another way to turn off the
   warning is to add no warnings 'utf8'; but that is often closer to
   cheating.  In general, you are supposed to explicitly mark the
   filehandle with an encoding, see open and perlfunc/binmode.