040000 tree 288b7be0b954759d08b16c643b7e5bd31d476ecb	alpha_test
040000 tree 4aac63a890e6b49da8161566a55c40e39039549b	beta_test
100644 blob 43e700aaa5e836ecd5dbf72f89af4a929d271c32	skerr.go
100644 blob 3c73da1e5c7adf443da1fa51ad80789e77fe55cc	skerr_test.go