=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching z3-4.4.1.tar.gz
=> Total size: 3347371 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file z3-4.4.1.tar.gz
=> Fetching z3-jumbo-patch-20151123.gz
=> Total size: 4395 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file z3-jumbo-patch-20151123.gz
=> Checksum SHA1 OK for z3-4.4.1.tar.gz
=> Checksum RMD160 OK for z3-4.4.1.tar.gz
=> Checksum SHA512 OK for z3-4.4.1.tar.gz
=> Checksum SHA1 OK for z3-jumbo-patch-20151123.gz
=> Checksum RMD160 OK for z3-jumbo-patch-20151123.gz
=> Checksum SHA512 OK for z3-jumbo-patch-20151123.gz