=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for braintree-3.3.0.gem
=> Checksum RMD160 OK for braintree-3.3.0.gem
=> Checksum SHA512 OK for braintree-3.3.0.gem
===> Installing dependencies for ruby25-braintree-3.3.0
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ruby25-builder>=3.2.4: found ruby25-builder-3.2.4
=> Full dependency ruby25-libxml>=3.2.0: found ruby25-libxml-3.2.1
=> Full dependency ruby25-base>=2.5.9: NOT found
=> Verifying /nonexistent for ../../lang/ruby25-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/lang/ruby25-base
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/finance/ruby-braintree