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

[User Www-data]

/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:15: element anchor: validity error : ID mirrors-am-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:24: element anchor: validity error : ID mirrors-au-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:40: element anchor: validity error : ID mirrors-at-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:49: element anchor: validity error : ID mirrors-ca-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:65: element anchor: validity error : ID mirrors-cz-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:74: element anchor: validity error : ID mirrors-dk-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:83: element anchor: validity error : ID mirrors-fi-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:94: element anchor: validity error : ID mirrors-fr-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:105: element anchor: validity error : ID mirrors-de-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:116: element anchor: validity error : ID mirrors-hk-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:127: element anchor: validity error : ID mirrors-ie-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:138: element anchor: validity error : ID mirrors-jp-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:147: element anchor: validity error : ID mirrors-lv-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:158: element anchor: validity error : ID mirrors-lt-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:169: element anchor: validity error : ID mirrors-nl-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:180: element anchor: validity error : ID mirrors-no-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:191: element anchor: validity error : ID mirrors-ru-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:200: element anchor: validity error : ID mirrors-si-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:211: element anchor: validity error : ID mirrors-za-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:222: element anchor: validity error : ID mirrors-es-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:238: element anchor: validity error : ID mirrors-se-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:249: element anchor: validity error : ID mirrors-ch-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:261: element anchor: validity error : ID mirrors-tw-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:285: element anchor: validity error : ID mirrors-uk-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:301: element anchor: validity error : ID mirrors-us-www already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:7: element sect2: validity error : ID pgpkey-security-officer already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:12: element sect2: validity error : ID pgpkey-secteam-secretary already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:17: element sect2: validity error : ID pgpkey-core-secretary already defined
/usr/local/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:22: element sect2: validity error : ID pgpkey-portmgr-secretary already defined
*** Error code 1

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

Stop.
make[3]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/books
*** 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
        6.31 real         2.30 user         3.79 sys