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040000 tree 709b089da224d9767bcac96a6d4b3238aa10fdcd	linux-x86-clang
040000 tree 5c3990ae86ef8f8763ad7ab7acaaee28b44d3d93	linux-x86-gccgo
040000 tree bf9a979639e5c514b6eb172cf73b8cc24d5ab048	linux-x86-nacl
040000 tree 618690242feef4043464b8e36385f7577ed1aeaa	linux-x86-sid