Mitogen eats stderr on async tasks

[jbscare]

This playbook:

- hosts: localhost
  tasks: 

    - command: ls -Fla /file/not/found
      register: ls_result 
      failed_when: False 

    - debug: var=ls_result 
 
    - command: ls -Fla /file/not/found 
      async: 3600 
      poll: 1 
      register: ls_result 
      failed_when: False 

    - debug: var=ls_result 

With Mitogen (master as of earlier today, 5c5e9fb I believe):

TASK [command] *****************************************************************
changed: [localhost]

TASK [debug] *******************************************************************
ok: [localhost] => {
    "ls_result": {
        "changed": true, 
        "cmd": [
            "ls", 
            "-Fla", 
            "/file/not/found"
        ], 
        "delta": "0:00:00.003293", 
        "end": "2019-02-12 21:50:35.381540", 
        "failed": false, 
        "failed_when_result": false, 
        "msg": "non-zero return code", 
        "rc": 2, 
        "start": "2019-02-12 21:50:35.378247", 
        "stderr": "ls: cannot access /file/not/found: No such file or directory", 
        "stderr_lines": [
            "ls: cannot access /file/not/found: No such file or directory"
        ], 
        "stdout": "", 
        "stdout_lines": []
    }
}

TASK [command] *****************************************************************
changed: [localhost]

TASK [debug] *******************************************************************
ok: [localhost] => {
    "ls_result": {
        "ansible_job_id": "b445f6d9bb68bfc5", 
        "changed": true, 
        "cmd": [
            "ls", 
            "-Fla", 
            "/file/not/found"
        ], 
        "data": "", 
        "delta": "0:00:00.003631", 
        "end": "2019-02-12 21:50:35.519720", 
        "failed": false, 
        "failed_when_result": false, 
        "finished": 1, 
        "msg": "non-zero return code", 
        "rc": 2, 
        "start": "2019-02-12 21:50:35.516089", 
        "stderr": "", 
        "stderr_lines": [], 
        "stdout": "", 
        "stdout_lines": [], 
        "warnings": []
    }
}

Note that the stderr and stderr_lines parameters are empty for the second task, identical to the first except for async.

With the default linear strategy:

TASK [command] *****************************************************************
changed: [localhost]

TASK [debug] *******************************************************************
ok: [localhost] => {
    "ls_result": {
        "changed": true, 
        "cmd": [
            "ls", 
            "-Fla", 
            "/file/not/found"
        ], 
        "delta": "0:00:00.004674", 
        "end": "2019-02-12 21:51:46.849912", 
        "failed": false, 
        "failed_when_result": false, 
        "msg": "non-zero return code", 
        "rc": 2, 
        "start": "2019-02-12 21:51:46.845238", 
        "stderr": "ls: cannot access /file/not/found: No such file or directory", 
        "stderr_lines": [
            "ls: cannot access /file/not/found: No such file or directory"
        ], 
        "stdout": "", 
        "stdout_lines": []
    }
}

TASK [command] *****************************************************************
changed: [localhost]

TASK [debug] *******************************************************************
ok: [localhost] => {
    "ls_result": {
        "ansible_job_id": "655299817323.34046", 
        "changed": true, 
        "cmd": [
            "ls", 
            "-Fla", 
            "/file/not/found"
        ], 
        "delta": "0:00:00.004541", 
        "end": "2019-02-12 21:51:47.121374", 
        "failed": false, 
        "failed_when_result": false, 
        "finished": 1, 
        "msg": "non-zero return code", 
        "rc": 2, 
        "start": "2019-02-12 21:51:47.116833", 
        "stderr": "ls: cannot access /file/not/found: No such file or directory", 
        "stderr_lines": [
            "ls: cannot access /file/not/found: No such file or directory"
        ], 
        "stdout": "", 
        "stdout_lines": []
    }
}

Note identical (except for datestamps, pedantic people) output for both.

[dw]

This is definitely #497. I'll see if there's more the extension can do here

[dw]

Thanks for reporting!

[dw]

0.2.5 is on PyPI now :)