Process forking causing cuprite/ferrum to never exit about cuprite HOT 1 OPEN

RSpec.configure do |config|
  config.before(:suite) do
   # List all process using the port that we're about to use
   pid_output = `lsof -i tcp:#{9500 + ENV['TEST_ENV_NUMBER'].to_i} | awk 'NR!=1 {print $2}'`

   # Kill those processes if any were found
   system("echo '#{pid_output}' | xargs kill -9") unless pid_output.strip.empty?
 end
end