100644 blob 9c1604a12c33f52fa1d67f3939e9109503df032a	BUILD
040000 tree 78e1c683934e74786cb2d0213360342aa2398018	debian8_clang
040000 tree b520da7e730f14fa5e5aa0c291ed924ccd94bdbd	ubuntu16_04_clang
040000 tree 2cf3f1442ed7646459a4f53a2b9ca7e49b308889	windows