INDEX build failed for 11.x

[Ports Index build]

INDEX build failed with errors:
Generating INDEX-11 - please wait..--- describe.accessibility ---
--- describe.arabic ---
--- describe.archivers ---
--- describe.astro ---
--- describe.audio ---
--- describe.benchmarks ---
--- describe.biology ---
--- describe.cad ---
--- describe.chinese ---
--- describe.comms ---
--- describe.converters ---
--- describe.databases ---
--- describe.deskutils ---
--- describe.devel ---
--- describe.dns ---
--- describe.editors ---
--- describe.emulators ---
--- describe.finance ---
--- describe.french ---
--- describe.ftp ---
[...]
--- describe.security ---
--- describe.shells ---
--- describe.sysutils ---
--- describe.textproc ---
--- describe.sysutils ---
sh: freebsd-version: not found
make[5]: "/home/indexbuild/tindex/ports/sysutils/etc_os-release/Makefile" line 18: warning: "freebsd-version -u" returned non-zero status
--- describe.ukrainian ---
--- describe.vietnamese ---
--- describe.www ---
--- describe.x11 ---
--- describe.x11-clocks ---
--- describe.x11-drivers ---
--- describe.x11-fm ---
--- describe.x11-fonts ---
--- describe.x11-servers ---
--- describe.x11-themes ---
--- describe.x11-toolkits ---
--- describe.x11-wm ---
 Done.
make_index: /home/indexbuild/tindex/ports/textproc/rubygem-puppet-strings: no entry for /home/indexbuild/tindex/ports/devel/rubygem-rgen

Committers on the hook:
 dbaio jhb jpaetzel pfg romain woodsb02 

Most recent SVN update was:
Updating '.':
U    net-mgmt/zabbix44-server/Makefile
U    net-mgmt/zabbix44-server/distinfo
U    net-mgmt/zabbix4-server/Makefile
U    net-mgmt/zabbix4-server/distinfo
U    devel/py-yaml/Makefile
U    devel/py-yaml/distinfo
U    devel/jetbrains-webstorm/Makefile
U    devel/jetbrains-webstorm/distinfo
U    devel/jetbrains-webstorm/pkg-plist
U    devel/jetbrains-phpstorm/Makefile
U    devel/jetbrains-phpstorm/distinfo
U    devel/jetbrains-phpstorm/pkg-plist
U    base/binutils/Makefile
U    base/binutils/pkg-plist
U    sysutils/rubygem-bolt/Makefile
U    sysutils/rubygem-bolt/distinfo
U    textproc/Makefile
A    textproc/rubygem-puppet-strings
A    textproc/rubygem-puppet-strings/Makefile
A    textproc/rubygem-puppet-strings/distinfo
A    textproc/rubygem-puppet-strings/pkg-descr
U    net/rclone/Makefile
U    net/rclone/distinfo
Updated to revision 518976.