You can't do a 'use' inside and 'eval'

eval "use CGI";
$q = new CGI;
print $q->header;
__DATA__
Content-Type: text/html; charset=ISO-8859-1
[download]

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print