=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching boost_1_61_0.tar.bz2
=> Total size: 85202254 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file boost_1_61_0.tar.bz2
=> Checksum SHA1 OK for boost_1_61_0.tar.bz2
=> Checksum RMD160 OK for boost_1_61_0.tar.bz2
=> Checksum SHA512 OK for boost_1_61_0.tar.bz2