=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching libusb-1.0.20.tar.bz2
=> Total size: 795247 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file libusb-1.0.20.tar.bz2
=> Checksum SHA1 OK for libusb-1.0.20.tar.bz2
=> Checksum RMD160 OK for libusb-1.0.20.tar.bz2
=> Checksum SHA512 OK for libusb-1.0.20.tar.bz2