=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching v4.0.1.tar.gz
=> Total size: 2190274 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file v4.0.1.tar.gz
=> Checksum SHA1 OK for camlimages-4.0.1a/v4.0.1.tar.gz
=> Checksum RMD160 OK for camlimages-4.0.1a/v4.0.1.tar.gz
=> Checksum SHA512 OK for camlimages-4.0.1a/v4.0.1.tar.gz