freebsd-amd64-head (FreeBSD/amd64 HEAD (Gabor Pali)), build 881, Failure

[Builder]

freebsd-amd64-head (FreeBSD/amd64 HEAD (Gabor Pali)), build 881

Build failed
Details: http://haskell.inf.elte.hu/builders/freebsd-amd64-head/881.html

git clone                    | Success
git clone (Windows tarballs) | Success
create mk/build.mk           | Success
repo versions                | Success
touching clean-check files   | Success
setting version date         | Success
booting                      | Success
configuring                  | Success
creating check-remove-before | Success
compiling                    | Success
creating check-remove-after  | Success
compiling testremove         | Success
simulating clean             | Success
checking clean               | Success
making bindist               | Success
making srcdist               | Failure: Just (ExitFailure 2)

Build failed
Details: http://haskell.inf.elte.hu/builders/freebsd-amd64-head/881.html

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gmake --no-print-directory -f ghc.mk sdist NO_INCLUDE_DEPS=YES NO_INCLUDE_PKGDATA=YES
update VERSION (8.1.20160123)
update GIT_COMMIT_ID (b01288d509b0f9e45f23ae48f2366f85f489089c)
"rm" -rf sdistprep/ghc  
"rm" -f sdistprep/ghc-8.1.20160123-src.tar.xz  
mkdir -p sdistprep
mkdir -p sdistprep/ghc
mkdir -p sdistprep/ghc/ghc-8.1.20160123
cd sdistprep/ghc/ghc-8.1.20160123 && for i in mk rules docs distrib bindisttest libffi includes utils docs rts compiler ghc driver libraries libffi-tarballs iserv; do mkdir -p $i; ( cd $i && lndir /usr/home/ghc-builder/work/builder/tempbuild/build/$i ); done
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ghc.mk:1192: recipe for target 'sdist-ghc-prep-tree' failed
gmake[1]: *** [sdist-ghc-prep-tree] Error 127
Makefile:155: recipe for target 'sdist' failed
gmake: *** [sdist] Error 2
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File not deleted:    "docs/users_guide/ghc_config.pyc"
File not deleted:    "libraries/time/lib/include/HsTimeConfig.h"