script: $SAFE=2 to 4 are obsolete (ArgumentError)
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mattzque commented
/usr/local/bundle/gems/rbot-0.9.15/data/rbot/plugins/script.rb:126:in `block in handle_echo': $SAFE=2 to 4 are obsolete (ArgumentError)
/usr/local/bundle/gems/rbot-0.9.15/data/rbot/plugins/script.rb:126: warning: $SAFE will become a normal global variable in Ruby 3.0