Error 2 compiling

[quantumproducer]

/brew update
Already up-to-date.
~/brew upgrade
==> Upgrading 1 outdated package, with result:
sammy007/cryptonight/monero 0.11.1.0 -> 0.12.0.0
==> Upgrading sammy007/cryptonight/monero
==> Cloning https://github.com/monero-project/monero.git
Updating /Users/quantum/Library/Caches/Homebrew/monero--git
==> Checking out tag v0.12.0.0
HEAD is now at c29890c Merge pull request #3493
HEAD is now at c29890c Merge pull request #3493
Entering 'external/unbound'
/Users/quantum/Library/Caches/Homebrew/monero--git/external/unbound
==> Downloading https://raw.githubusercontent.com/zeromq/cppzmq/7a8cc9d7cf448b8fd654ec4cd24fd48b57a76162/zmq.hpp
Already downloaded: /Users/quantum/Library/Caches/Homebrew/monero--cppzmq--0.12.0.0.hpp
==> cmake . -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG -DCMAKE_CXX_FLAGS_RELEASE=-DNDEBUG -DCMAKE_INSTALL_PREFIX=/usr/local/Cellar/monero/0.
==> make install
Last 15 lines from /Users/quantum/Library/Logs/Homebrew/monero/02.make:
[ 62%] Building C object external/unbound/CMakeFiles/unbound.dir/libunbound/libunbound.c.o
cd /tmp/monero-20180903-24531-18rtz67/external/unbound && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang -DAUTO_INITIALIZE_EASYLOGGINGPP -DBLOCKCHAIN_DB=DB_LMDB -DDEFAULT_DB_TYPE=\"lmdb\" -DHAVE_MEMSET_S -DHAVE_STRPTIME -DPER_BLOCK_CHECKPOINT -D_GNU_SOURCE -I/tmp/monero-20180903-24531-18rtz67/external/easylogging++ -I/tmp/monero-20180903-24531-18rtz67/src -I/tmp/monero-20180903-24531-18rtz67/contrib/epee/include -I/tmp/monero-20180903-24531-18rtz67/external -I/tmp/monero-20180903-24531-18rtz67/translations -I/tmp/monero-20180903-24531-18rtz67/external/unbound -isystem /usr/include/malloc -isystem /usr/local/opt/openssl/include  -DNDEBUG -Ofast   -std=c99 -fPIC -o CMakeFiles/unbound.dir/libunbound/libunbound.c.o   -c /tmp/monero-20180903-24531-18rtz67/external/unbound/libunbound/libunbound.c
[ 62%] Building C object external/unbound/CMakeFiles/unbound.dir/libunbound/libworker.c.o
cd /tmp/monero-20180903-24531-18rtz67/external/unbound && /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang -DAUTO_INITIALIZE_EASYLOGGINGPP -DBLOCKCHAIN_DB=DB_LMDB -DDEFAULT_DB_TYPE=\"lmdb\" -DHAVE_MEMSET_S -DHAVE_STRPTIME -DPER_BLOCK_CHECKPOINT -D_GNU_SOURCE -I/tmp/monero-20180903-24531-18rtz67/external/easylogging++ -I/tmp/monero-20180903-24531-18rtz67/src -I/tmp/monero-20180903-24531-18rtz67/contrib/epee/include -I/tmp/monero-20180903-24531-18rtz67/external -I/tmp/monero-20180903-24531-18rtz67/translations -I/tmp/monero-20180903-24531-18rtz67/external/unbound -isystem /usr/include/malloc -isystem /usr/local/opt/openssl/include  -DNDEBUG -Ofast   -std=c99 -fPIC -o CMakeFiles/unbound.dir/libunbound/libworker.c.o   -c /tmp/monero-20180903-24531-18rtz67/external/unbound/libunbound/libworker.c
[ 62%] Linking C static library libunbound.a
cd /tmp/monero-20180903-24531-18rtz67/external/unbound && /usr/local/Cellar/cmake/3.12.1/bin/cmake -P CMakeFiles/unbound.dir/cmake_clean_target.cmake
cd /tmp/monero-20180903-24531-18rtz67/external/unbound && /usr/local/Cellar/cmake/3.12.1/bin/cmake -E cmake_link_script CMakeFiles/unbound.dir/link.txt --verbose=1
/usr/bin/ar qc libunbound.a  CMakeFiles/unbound.dir/services/authzone.c.o CMakeFiles/unbound.dir/services/cache/dns.c.o CMakeFiles/unbound.dir/services/cache/infra.c.o CMakeFiles/unbound.dir/services/cache/rrset.c.o CMakeFiles/unbound.dir/util/data/dname.c.o CMakeFiles/unbound.dir/util/data/msgencode.c.o CMakeFiles/unbound.dir/util/data/msgparse.c.o CMakeFiles/unbound.dir/util/data/msgreply.c.o CMakeFiles/unbound.dir/util/data/packed_rrset.c.o CMakeFiles/unbound.dir/iterator/iterator.c.o CMakeFiles/unbound.dir/iterator/iter_delegpt.c.o CMakeFiles/unbound.dir/iterator/iter_donotq.c.o CMakeFiles/unbound.dir/iterator/iter_fwd.c.o CMakeFiles/unbound.dir/iterator/iter_hints.c.o CMakeFiles/unbound.dir/iterator/iter_priv.c.o CMakeFiles/unbound.dir/iterator/iter_resptype.c.o CMakeFiles/unbound.dir/iterator/iter_scrub.c.o CMakeFiles/unbound.dir/iterator/iter_utils.c.o CMakeFiles/unbound.dir/respip/respip.c.o CMakeFiles/unbound.dir/services/listen_dnsport.c.o CMakeFiles/unbound.dir/services/localzone.c.o CMakeFiles/unbound.dir/services/mesh.c.o CMakeFiles/unbound.dir/services/modstack.c.o CMakeFiles/unbound.dir/services/outbound_list.c.o CMakeFiles/unbound.dir/services/outside_network.c.o CMakeFiles/unbound.dir/services/view.c.o CMakeFiles/unbound.dir/util/alloc.c.o CMakeFiles/unbound.dir/util/as112.c.o CMakeFiles/unbound.dir/util/config_file.c.o CMakeFiles/unbound.dir/util/configlexer.c.o CMakeFiles/unbound.dir/util/configparser.c.o CMakeFiles/unbound.dir/util/fptr_wlist.c.o CMakeFiles/unbound.dir/util/locks.c.o CMakeFiles/unbound.dir/util/log.c.o CMakeFiles/unbound.dir/util/mini_event.c.o CMakeFiles/unbound.dir/util/module.c.o CMakeFiles/unbound.dir/util/netevent.c.o CMakeFiles/unbound.dir/util/net_help.c.o CMakeFiles/unbound.dir/util/random.c.o CMakeFiles/unbound.dir/util/rbtree.c.o CMakeFiles/unbound.dir/util/regional.c.o CMakeFiles/unbound.dir/util/rtt.c.o CMakeFiles/unbound.dir/util/storage/dnstree.c.o CMakeFiles/unbound.dir/util/storage/lookup3.c.o CMakeFiles/unbound.dir/util/storage/lruhash.c.o CMakeFiles/unbound.dir/util/storage/slabhash.c.o CMakeFiles/unbound.dir/util/timehist.c.o CMakeFiles/unbound.dir/util/tube.c.o CMakeFiles/unbound.dir/util/ub_event.c.o CMakeFiles/unbound.dir/util/winsock_event.c.o CMakeFiles/unbound.dir/validator/autotrust.c.o CMakeFiles/unbound.dir/validator/val_anchor.c.o CMakeFiles/unbound.dir/validator/validator.c.o CMakeFiles/unbound.dir/validator/val_kcache.c.o CMakeFiles/unbound.dir/validator/val_kentry.c.o CMakeFiles/unbound.dir/validator/val_neg.c.o CMakeFiles/unbound.dir/validator/val_nsec3.c.o CMakeFiles/unbound.dir/validator/val_nsec.c.o CMakeFiles/unbound.dir/validator/val_secalgo.c.o CMakeFiles/unbound.dir/validator/val_sigcrypt.c.o CMakeFiles/unbound.dir/validator/val_utils.c.o CMakeFiles/unbound.dir/dns64/dns64.c.o CMakeFiles/unbound.dir/testcode/checklocks.c.o CMakeFiles/unbound.dir/sldns/keyraw.c.o CMakeFiles/unbound.dir/sldns/sbuffer.c.o CMakeFiles/unbound.dir/sldns/wire2str.c.o CMakeFiles/unbound.dir/sldns/parse.c.o CMakeFiles/unbound.dir/sldns/parseutil.c.o CMakeFiles/unbound.dir/sldns/rrdef.c.o CMakeFiles/unbound.dir/sldns/str2wire.c.o CMakeFiles/unbound.dir/compat/explicit_bzero.c.o CMakeFiles/unbound.dir/compat/reallocarray.c.o CMakeFiles/unbound.dir/compat/getentropy_osx.c.o CMakeFiles/unbound.dir/libunbound/context.c.o CMakeFiles/unbound.dir/libunbound/libunbound.c.o CMakeFiles/unbound.dir/libunbound/libworker.c.o
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libunbound.a(checklocks.c.o) has no symbols
/usr/bin/ranlib libunbound.a
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libunbound.a(checklocks.c.o) has no symbols
[ 62%] Built target unbound
[ 62%] Built target obj_checkpoints
make[1]: *** [src/cryptonote_basic/CMakeFiles/obj_cryptonote_basic.dir/all] Error 2
make: *** [all] Error 2

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