=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for mailfactory-1.4.0.gem
=> Checksum SHA512 OK for mailfactory-1.4.0.gem
mkdir: /tmp/pkgbuild/mail: No space left on device
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/mail/ruby-mailfactory