Warning from GTK. The GTK group said they would remove the warning but didn't say when. There is no danger of error. Test will be updated.
Wide character in syswrite at /usr/local/lib/perl5/site_perl/5.10.0/File/Slurp.pm line 330. See
File::Slurp doe not support Unicode. The needed change has been listed in the todo for quite a while.
MAKE TEST failed: Illegal seek /usr/local/bin/perl Build --makefile_env_macros 1 test t/001_load. That one beats me! I doubt it has anything to do with Asciio.
I also notice that you are using a rather old version 0.95_01 which is a beta. 1.02.71 is on CPAN. 1.50 is in the queue for release and I'd appreciate beta testers :)