=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching polyml.5.6.tar.gz
=> Total size: 6066166 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file polyml.5.6.tar.gz
=> Checksum SHA1 OK for polyml.5.6.tar.gz
=> Checksum RMD160 OK for polyml.5.6.tar.gz
=> Checksum SHA512 OK for polyml.5.6.tar.gz