Checking prerequisites...
  recommends:
    *  HTML::FormatText is not installed
    *  LWP::UserAgent is not installed

   HTML::FormatText is only required if you want to use HTML::Element's
   "format" method, which converts HTML to formatted plain text.

   LWP::UserAgent is only required if you want to use HTML::TreeBuilder's
   "new_from_url" method, which fetches a document given its URL.

   If you install these modules later, you do NOT need to reinstall HTML-Tree.

ERRORS/WARNINGS FOUND IN PREREQUISITES.  You may wish to install the versions
of the modules indicated above before proceeding with this installation

Run 'Build installdeps' to install missing prerequisites.