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

Thu Sep 28 19:07:03 UTC 2017

Sep 28 19:04:23 build-web newsyslog[85857]: logfile turned over due to -F request
Build started Thu Sep 28 19:07:00 UTC 2017
Updating 'head':
At revision 50953.
Updating 'relnotes/doc':
At revision 324087.
Updating 'relnotes/man4':
At revision 324087.
Updating 'relnotes11/doc':
At revision 324087.
Updating 'relnotes11/man4':
At revision 324087.
Updating 'relnotes10/doc':
At revision 324087.
Updating 'relnotes10/man4':
At revision 324087.
Updating 'ports':
At revision 450859.
make: don't know how to make html". Stop

make: stopped in /usr/local/www/build/head
        0.03 real         0.01 user         0.01 sys