Last 15 lines from /Users/keegan/Library/Logs/Homebrew/arpc/02.make:
[ 10%] Building CXX object contrib/googletest-release-1.8.0/googletest/CMakeFiles/gtest.dir/src/gtest-all.cc.o
cd /tmp/arpc-20180121-81621-gy0zgx/arpc-0.6/contrib/googletest-release-1.8.0/googletest && /usr/local/opt/llvm@4/bin/clang++ -DGTEST_CREATE_SHARED_LIBRARY=1 -Dgtest_EXPORTS -I/tmp/arpc-20180121-81621-gy0zgx/arpc-0.6 -I/tmp/arpc-20180121-81621-gy0zgx/arpc-0.6/contrib/googletest-release-1.8.0/googletest/include -I/tmp/arpc-20180121-81621-gy0zgx/arpc-0.6/contrib/googletest-release-1.8.0/googletest -DNDEBUG -fPIC -DGTEST_HAS_PTHREAD=1 -std=c++1z -o CMakeFiles/gtest.dir/src/gtest-all.cc.o -c /tmp/arpc-20180121-81621-gy0zgx/arpc-0.6/contrib/googletest-release-1.8.0/googletest/src/gtest-all.cc
Traceback (most recent call last):
File "scripts/aprotoc.py", line 27, in <module>
import pypeg2
ModuleNotFoundError: No module named 'pypeg2'
make[2]: *** [arpc_protocol.h] Error 1
make[2]: *** Deleting file `arpc_protocol.h'
make[1]: *** [CMakeFiles/arpc.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 15%] Linking CXX shared library libgtest.dylib
cd /tmp/arpc-20180121-81621-gy0zgx/arpc-0.6/contrib/googletest-release-1.8.0/googletest && /usr/local/Cellar/cmake/3.10.2/bin/cmake -E cmake_link_script CMakeFiles/gtest.dir/link.txt --verbose=1
/usr/local/opt/llvm@4/bin/clang++ -DNDEBUG -dynamiclib -Wl,-headerpad_max_install_names -o libgtest.dylib -install_name /tmp/arpc-20180121-81621-gy0zgx/arpc-0.6/contrib/googletest-release-1.8.0/googletest/libgtest.dylib CMakeFiles/gtest.dir/src/gtest-all.cc.o -L/tmp/arpc-20180121-81621-gy0zgx/arpc-0.6/contrib/googletest-release-1.8.0/googletest/src
[ 15%] Built target gtest
make: *** [all] Error 2