FreeBSD web build failed on build-web.ysv.freebsd.org

[User Www-data]

===> doc/articles/gjournal-desktop (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/gjournal-desktop
===> doc/articles/hubs (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/hubs
===> doc/articles/ipsec-must (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/ipsec-must
===> doc/articles/ldap-auth (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/ldap-auth
===> doc/articles/leap-seconds (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/leap-seconds
===> doc/articles/linux-emulation (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/linux-emulation
===> doc/articles/linux-users (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/linux-users
===> doc/articles/mailing-list-faq (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/mailing-list-faq
===> doc/articles/nanobsd (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/nanobsd
===> doc/articles/new-users (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/new-users
===> doc/articles/p4-primer (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/p4-primer
===> doc/articles/pam (all)
Warning: Object directory not changed from original /usr/local/www/build/head/en_US.ISO8859-1/articles/pam
===> doc/articles/pgpkeys (all)
env XML_CATALOG_FILES="file:///usr/local/www/build/head/en_US.ISO8859-1/articles/pgpkeys/catalog-cwd.xml  file:///usr/local/www/build/head/en_US.ISO8859-1/share/xml/catalog.xml  file:///usr/local/www/build/head/share/xml/catalog.xml  file:///usr/local/share/xml/catalog" /usr/local/bin/xmllint --nonet --noent --valid --dropdtd --xinclude /usr/local/www/build/head/en_US.ISO8859-1/articles/pgpkeys/article.xml > article.parsed.xml.tmp
/usr/local/www/build/head/share/pgpkeys/pgpkeys-developers.xml:1492: element sect2: validity error : Element sect2 content does not follow the DTD, expecting (((title | titleabbrev | subtitle)* , info?) , (((itemizedlist | orderedlist | procedure | simplelist | variablelist | segmentedlist | glosslist | bibliolist | calloutlist | qandaset | example | figure | table | equation | informalexample | informalfigure | informaltable | informalequation | sidebar | blockquote | address | epigraph | mediaobject | screenshot | task | productionset | constraintdef | msgset | screen | literallayout | programlistingco | screenco | programlisting | synopsis | bridgehead | remark | revhistory | indexterm | funcsynopsis | classsynopsis | methodsynopsis | constructorsynopsis | destructorsynopsis | fieldsynopsis | cmdsynopsis | caution | important | note | tip | warning | anchor | para | formalpara | simpara | annotation)+ , ((sect3+ , simplesect*) | simplesect+)?) | (sect3+ , simplesect*) | simplesect
 +) , (glossary | bibliography | index | toc)*), got (title CDATA programlisting programlisting )
    </sect2>
            ^
*** Error code 4

Stop.
make[4]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/articles/pgpkeys
*** Error code 1

Stop.
make[3]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/articles
*** Error code 1

Stop.
make[2]: stopped in /usr/local/www/build/head/en_US.ISO8859-1
*** Error code 1

Stop.
make[1]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/htdocs/doc
*** Error code 1

Stop.
make: stopped in /usr/local/www/build/head/en_US.ISO8859-1/htdocs
        4.78 real         2.14 user         2.86 sys