=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching duff-0.2.tar.gz
=> Total size: 15471 bytes
=> Checksum SHA1 OK for duff-0.2.tar.gz
=> Checksum RMD160 OK for duff-0.2.tar.gz
=> Checksum SHA512 OK for duff-0.2.tar.gz