040000 tree 2b07dafa25d72d5cfbc10eb764a8cbd0baa6a551	debian8_clang
040000 tree 9e7add04a8b5d61385d114616c3460e9af02d75b	experimental
040000 tree 247c49b8ef0957e67e09002e0bc7ae48a5c3b9fe	java
040000 tree 7494f66767f9f15699941a9fed2a750c186ad2a1	ubuntu16_04_clang