Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [xsltproc --nonet -o doc/ambiguous_words.1 http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl -
I/O error : Attempt to load network entity http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
warning: failed to load external entity "http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"
]: [Build failure reason.]

Issue: The build process is trying to download data from the internet. This is not allowed as per Fedora Packaging guidelines.
Resolution: Remove requirement of downloading data from the internet.