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 ---
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--- describe.x11-wm ---
 Done.
make_index: /home/indexbuild/tindex/ports/devel/py-trimesh: no entry for /home/indexbuild/tindex/ports/math/py-python-fcl

Committers on the hook:
 db dmgk dvl tijl 

Most recent SVN update was:
Updating '.':
U    print/cups-filters/Makefile
U    print/cups-filters/distinfo
U    security/cyberchef/Makefile
U    security/cyberchef/distinfo
U    devel/py-trimesh/Makefile
U    devel/gllvm/Makefile
U    devel/gllvm/distinfo
D    math/py-python_fcl
A    math/py-python-fcl
A    math/py-python-fcl/Makefile
A    math/py-python-fcl/distinfo
A    math/py-python-fcl/files
A    math/py-python-fcl/files/patch-setup.py
A    math/py-python-fcl/pkg-descr
Updated to revision 529101.