040000 tree efb4e868f94a5a9a4448f4964ede42f1731813e5	bazel_0.5.2
040000 tree 717de28185e20970734e4552d455ec4b59214886	bazel_0.5.4
040000 tree d844b57d78b78dde17094a54b52f6ec2f9c7441b	bazel_0.6.0