error: Command "gcc-4.2 -Wno-unused-result -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/include -I/usr/local/opt/sqlite/include -I/usr/local/lib/python3.4/site-packages/numpy/core/include -I/usr/local/lib/python3.4/site-packages/numpy/core/include -I/usr/local/Cellar/python3/3.4.2_1/Frameworks/Python.framework/Versions/3.4/include/python3.4m -c sklearn/__check_build/_check_build.c -o build/temp.macosx-10.8-x86_64-3.4/sklearn/__check_build/_check_build.o" failed with exit status 1

cc1: error: unrecognized command line option "-Wno-unused-result"