Perl XML::LibXML returning different results on different systems

I have a Linux Mint 17 system running perl v5.18.2, with a simple script to fetch some XML:

use XML::LibXML;

$url='http://ift.tt/USmjJs';

$parser = XML::LibXML->new();

$docFetched = $parser->parse_file($url);

print $docFetched;

It returns a full page of XML, which is what I want.

However, when I run this same script on another system (CentOS 6.4) with perl v5.10.1, I get the following:

XML::LibXML::Document=SCALAR(0x1253e40)

What might be the problem?

Any help would be great.

Thanks!