=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching zstd-1.0.0.tar.gz
=> Total size: 593430 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file zstd-1.0.0.tar.gz
=> Checksum SHA1 OK for zstd-1.0.0.tar.gz
=> Checksum RMD160 OK for zstd-1.0.0.tar.gz
=> Checksum SHA512 OK for zstd-1.0.0.tar.gz