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040000 tree 052a346e1ac8ab5d1d25bce01011f35c0b1988ee	ubuntu-18.04_clang-version
040000 tree e2f5cbff88e0ed1b0edfa7d16628ec1aec4e5a24	ubuntu-18.04_gcc-version
040000 tree e76e90bdeef8731a34e2f210ef8ca4f1728705c3	ubuntu-18.04_min-dependencies
040000 tree c037ec264be112bef16667fe6ca7740753ade44d	ubuntu-20.04_all-dependencies
040000 tree e9570dd948419b12af31866a52ebfcb6c6ed8af1	ubuntu-20.04_gcc-version