=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for net-smtp-0.3.3.gem
=> Checksum SHA512 OK for net-smtp-0.3.3.gem
mkdir: /tmp/pkgbuild/net: No space left on device
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/net/ruby-net-smtp