[llvm-testresults] buildbot failure in lab.llvm.org on libcxx_clang-x86_64-darwin11-RA

[llvmlab-buildmaster at lab.llvm.org]

The Buildbot has detected a failed build on builder libcxx_clang-x86_64-darwin11-RA while building lab.llvm.org.
Full details are available at:
 http://lab.llvm.org:8013/builders/libcxx_clang-x86_64-darwin11-RA/builds/555

Buildbot URL: http://lab.llvm.org:8013/

Buildslave for this Build: xserve4

Build Reason: Triggerable(phase4-stage0)
Build Source Stamp: 193961
Blamelist: 

BUILD FAILED: failed build.libcxx

sincerely,
 -The Buildbot


================================================================================

CHANGES:


LOGS:
Last 15 lines of 'stdio':
	+ /Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.libcxx_clang-x86_64-darwin11-RA/host-compiler/bin/clang++ -c -g -Os -arch i386 -arch x86_64 -nostdinc++ -std=c++11 -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion -Wpadded -Wstrict-aliasing=2 -Wstrict-overflow=4 -I../include ../src/thread.cpp
	+ for FILE in '../src/*.cpp'
	+ /Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.libcxx_clang-x86_64-darwin11-RA/host-compiler/bin/clang++ -c -g -Os -arch i386 -arch x86_64 -nostdinc++ -std=c++11 -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion -Wpadded -Wstrict-aliasing=2 -Wstrict-overflow=4 -I../include ../src/typeinfo.cpp
	+ for FILE in '../src/*.cpp'
	+ /Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.libcxx_clang-x86_64-darwin11-RA/host-compiler/bin/clang++ -c -g -Os -arch i386 -arch x86_64 -nostdinc++ -std=c++11 -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion -Wpadded -Wstrict-aliasing=2 -Wstrict-overflow=4 -I../include ../src/utility.cpp
	+ for FILE in '../src/*.cpp'
	+ /Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.libcxx_clang-x86_64-darwin11-RA/host-compiler/bin/clang++ -c -g -Os -arch i386 -arch x86_64 -nostdinc++ -std=c++11 -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion -Wpadded -Wstrict-aliasing=2 -Wstrict-overflow=4 -I../include ../src/valarray.cpp
	+ case $TRIPLE in
	+ /Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.libcxx_clang-x86_64-darwin11-RA/host-compiler/bin/clang algorithm.o bind.o chrono.o condition_variable.o debug.o exception.o future.o hash.o ios.o iostream.o locale.o memory.o mutex.o new.o optional.o random.o regex.o shared_mutex.o stdexcept.o string.o strstream.o system_error.o thread.o typeinfo.o utility.o valarray.o -arch i386 -arch x86_64 -o libc++.1.dylib -dynamiclib -nodefaultlibs -current_version 1 -compatibility_version 1 -install_name /usr/lib/libc++.1.dylib -lSystem -Wl,-unexported_symbols_list,libc++unexp.exp /usr/lib/libc++abi.dylib -Wl,-reexported_symbols_list,libc++abi.exp -Wl,-force_symbols_not_weak_list,notweak.exp -Wl,-force_symbols_weak_list,weak.exp -nostdinc++ -std=c++11 -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion -Wpadded -Wstrict-aliasing=2 -Wstrict-overflow=4
	clang: warning: argument unused during compilation: '-nostdinc++'
	duplicate symbol __ZNSt3__121__does_policy_containENS_6launchES0_ in:
	    future.o
	    thread.o
	ld: 1 duplicate symbol for architecture i386
	clang: error: linker command failed with exit code 1 (use -v to see invocation)