Tested versions

New code

• go version go1.7.4 darwin/amd64
• Apple LLVM version 8.0.0 (clang-800.0.42.1)
• The Glorious Glasgow Haskell Compilation System, version 8.0.1

Old code

• Python 2.7.8
• gcc version 4.8.3 (Homebrew gcc 4.8.3_1)
• Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
• rustc 0.11.0
• go version go1.3 darwin/amd64