=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching mecab-ruby-0.996.tar.gz
=> Total size: 48723 bytes
=> Checksum SHA1 OK for mecab-ruby-0.996.tar.gz
=> Checksum RMD160 OK for mecab-ruby-0.996.tar.gz
=> Checksum SHA512 OK for mecab-ruby-0.996.tar.gz