=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Fetching OTP-21.3.6.tar.gz
=> Total size: 54030023 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file OTP-21.3.6.tar.gz
=> Checksum BLAKE2s OK for erlang/OTP-21.3.6.tar.gz
=> Checksum SHA512 OK for erlang/OTP-21.3.6.tar.gz