[perl] Experimental keys on scalar is now forbidden 的问题解决

出错提示为：

# Experimental keys on scalar is now forbidden at /xxx/.cpanm/work/1468479049.21281/....../blib/script/convert line 106.

$perl -v

This is perl 5, version 24, subversion 0 (v5.24.0) built for x86_64-linux

(with 1 registered patch, see perl -V for more detail)

解决方法：

printf( "read \%i entries\n", int keys $entries );

修改为

printf( "read \%i entries\n", int keys %$entries );