def address_in_use_error(server)
      STDERR.puts <<-EOT
There appears that another instance is running, or another process
is listening on the same port (#{server.address}:#{server.port})

      EOT
      exit
    end
def address_in_use_error(server)
      STDERR.puts <<-EOT
There appears that another instance is running, or another process
is listening on the same port (#{server.address}:#{server.port})

      EOT
      exit
    end
ERRORS