100644 blob f1761033a3e3ed1183f022bf15dbb7bfbc79ff33	BUILD
040000 tree 06b53eabe6e07d0c714dc0cdeef25f91d248f5ea	debian8_clang
040000 tree 652188eb46ee1c628c124c9c356310557109919b	ubuntu16_04_clang
040000 tree f88b2e8b2defec67cbdd7f7079df16abd1cbecac	windows