=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching pytz-2016.6.1.tar.bz2
=> Total size: 172223 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file pytz-2016.6.1.tar.bz2
=> Checksum SHA1 OK for pytz-2016.6.1.tar.bz2
=> Checksum RMD160 OK for pytz-2016.6.1.tar.bz2
=> Checksum SHA512 OK for pytz-2016.6.1.tar.bz2