rbnacl version
Gem::LoadError : "Could not find 'rbnacl' (< 5.0, >= 3.2.0) - did find: [rbnacl-5.0.0]
Checked in 'GEM_PATH=/home/kwadronaut/.gem/ruby/2.3.0:/var/lib/gems/2.3.0:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.3.0:/usr/share/rubygems-int
``
This is on current Debian stable. `