on_stop method not work, tuple index out of range

I think the problem is the request/response timeout. But it does not show the assertion failed. And it needs to be shut down normally

Describe the bug

• Set Locust users number: 20
• Set spawn rate: 10
• Set run time: 90 secs

Problems:

• Some users did not call the on_stop method
• The task method is still called after on_stop called
• Exhausted my time limit (90 seconds)

Expected behavior

All users call on_stop and shutdown locust.

Actual behavior

I tried to interrupt the process because it never stops and it shows:

[2021-02-05 02:45:09,267] e34866ebd6ad/INFO/locust.main: Running teardowns...
[2021-02-05 02:45:09,267] e34866ebd6ad/INFO/locust.main: Shutting down (exit code 1), bye.
[2021-02-05 02:45:09,267] e34866ebd6ad/INFO/locust.main: Cleaning up runner...
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/locust/main.py", line 426, in main
    main_greenlet.join()
  File "/usr/local/lib/python3.8/site-packages/gevent/pool.py", line 430, in join
    result = self._empty_event.wait(timeout=timeout)
  File "src/gevent/event.py", line 163, in gevent._gevent_cevent.Event.wait
  File "src/gevent/_abstract_linkable.py", line 521, in gevent._gevent_c_abstract_linkable.AbstractLinkable._wait
  File "src/gevent/_abstract_linkable.py", line 487, in gevent._gevent_c_abstract_linkable.AbstractLinkable._wait_core
  File "src/gevent/_abstract_linkable.py", line 490, in gevent._gevent_c_abstract_linkable.AbstractLinkable._wait_core
  File "src/gevent/_abstract_linkable.py", line 442, in gevent._gevent_c_abstract_linkable.AbstractLinkable._AbstractLinkable__wait_to_be_notified
  File "src/gevent/_abstract_linkable.py", line 451, in gevent._gevent_c_abstract_linkable.AbstractLinkable._switch_to_hub
  File "src/gevent/_greenlet_primitives.py", line 61, in gevent._gevent_c_greenlet_primitives.SwitchOutGreenletWithLoop.switch
  File "src/gevent/_greenlet_primitives.py", line 65, in gevent._gevent_c_greenlet_primitives.SwitchOutGreenletWithLoop.switch
  File "src/gevent/_gevent_c_greenlet_primitives.pxd", line 35, in gevent._gevent_c_greenlet_primitives._greenlet_switch
KeyboardInterrupt

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/locust", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.8/site-packages/locust/main.py", line 433, in main
    shutdown()
  File "/usr/local/lib/python3.8/site-packages/locust/main.py", line 408, in shutdown
    runner.quit()
  File "/usr/local/lib/python3.8/site-packages/locust/runners.py", line 362, in quit
    self.stop()
  File "/usr/local/lib/python3.8/site-packages/locust/runners.py", line 413, in stop
    super().stop()
  File "/usr/local/lib/python3.8/site-packages/locust/runners.py", line 354, in stop
    self.stop_users(self.user_count)
  File "/usr/local/lib/python3.8/site-packages/locust/runners.py", line 223, in stop_users
    user = g.args[0]
IndexError: tuple index out of range

Steps to reproduce

1. Inherit HttpUser class
2. on_start -> Login user and setup
3. on_stop -> Delete user and teardown
4. task -> do something will be take much time

Environment

• OS:
• Docker version: 19.03.14
• Locust version: 1.4.3
• Locust command line that you ran: docker run -it --rm -v /home/users/workspace/tests/locust/:/mnt/locust locustio/locust:1.4.3 -f /mnt/locust/load_test.py -u 20-r 10 -t 90 -headless

[mm25712423]

Sorry, my fault. I found an error in my locust file. Fix it and done The command syntax error is because I typed it in the github web application instead of copying and pasting it 😛.

[github-actions[bot]]

This issue was closed because it has been stalled for 10 days with no activity. This does not necessarily mean that the issue is bad, but it most likely means that nobody is willing to take the time to fix it. If you have found Locust useful, then consider contributing a fix yourself!