=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching gperftools-2.9.1.tar.gz
=> Total size: 1581218 bytes
=> Checksum SHA1 OK for gperftools-2.9.1.tar.gz
=> Checksum RMD160 OK for gperftools-2.9.1.tar.gz
=> Checksum SHA512 OK for gperftools-2.9.1.tar.gz