Quoting elvis (2019-09-01 10:17:24)
I am getting thing error from cron, it started happening on the update
to Stretch and Buster did not fix it.
It looks like something missing from Ruby, but I am not able to find
it searching and I have no idea about ruby anyway.
Perhaps someone can help.
/etc/cron.weekly/dhelp:
/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- bdb (LoadError)
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/lib/ruby/vendor_ruby/dhelp.rb:21:in `<top (required)>'
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/sbin/dhelp_parse:32:in `<main>'
/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- bdb (LoadError)
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/lib/ruby/vendor_ruby/dhelp.rb:21:in `<top (required)>'
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/sbin/dhelp_parse:32:in `<main>'
run-parts: /etc/cron.weekly/dhelp exited with return code 1
Possibly related to this bug: https://bugs.debian.org/892548