Memory Leak With RabbitMQ (3.2.4) and Bunny Gem (2.5.1) On Ruby. Ubuntu

gistfile1.txt

#!/usr/bin/env ruby

require 'bunny'
require 'pry'

puts 'Connecting...'

conn = Bunny.new
conn.start

channel = conn.create_channel
queue = channel.queue('hello')

puts 'Connected...'

fork do
  loop do
    queue.publish('Sample Message')
  end

  conn.close
end

queue.subscribe(:block => true) do |_delivery_info, _properties, body|
  puts "Received #{body}"
  # imitate some work

  a = 0

  (1..100_000).each do |num|
    a = a + 1
  end
end

conn.close