# File lib/phusion_passenger/config/utils.rb, line 63
        def complain_that_multiple_passenger_instances_are_running(server_instances)
                puts "It appears that multiple #{PROGRAM_NAME} instances are running. Please select"
                puts "a specific one by passing:"
                puts
                puts "  --instance <#{PROGRAM_NAME} PID>"
                puts
                list_all_passenger_instances(server_instances)
                abort
        end