=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching google-protobuf-3.11.4.gem
=> Total size: 208896 bytes
=> Checksum SHA1 OK for google-protobuf-3.11.4.gem
=> Checksum RMD160 OK for google-protobuf-3.11.4.gem
=> Checksum SHA512 OK for google-protobuf-3.11.4.gem