wait_for_connection to localhost explicitly specified in the inventory and ansible_python_interpreter set to ansible_playbook_python fails with 'timed out waiting for ping module test: 'int' object has no attribute 'template'"'

[pstrzelczak]

Reproduction steps:

$ docker run --rm -it rockylinux:8.9.20231119 bash
$ yum install -y python38
$ pip3 install ansible==6.7.0
$ pip3 install mitogen=0.3.7
$ ANSIBLE_STRATEGY_PLUGINS=/usr/local/lib/python3.8/site-packages/ansible_mitogen/plugins/strategy ANSIBLE_STRATEGY=mitogen_linear ansible -i /tmp/hosts.yml localhost -m ansible.builtin.wait_for_connection -vvv

where

$ cat /tmp/hosts.yml 
all:
        hosts:
                localhost:
                        ansible_connection: local
                        ansible_python_interpreter: "{{ ansible_playbook_python }}"

Result:

localhost | FAILED! => {
    "changed": false,
    "elapsed": 600,
    "msg": "timed out waiting for ping module test: 'int' object has no attribute 'template'"
}

Suprisingly, with implicit inventory it works fine:

$ ANSIBLE_STRATEGY_PLUGINS=/usr/local/lib/python3.8/site-packages/ansible_mitogen/plugins/strategy ANSIBLE_STRATEGY=mitogen_linear ansible localhost -m ansible.builtin.wait_for_connection
[WARNING]: No inventory was parsed, only implicit localhost is available
localhost | SUCCESS => {
    "changed": false,
    "elapsed": 0
}

• Which version of Ansible are you running?

$ ansible --version
ansible [core 2.13.13]
(...)
  python version = 3.8.17 (default, Aug 10 2023, 18:03:39) [GCC 8.5.0 20210514 (Red Hat 8.5.0-20)]
  jinja version = 3.1.3
  libyaml = True

• Is your version of Ansible patched in any way? No

• Are you running with any custom modules, or module_utils loaded? No

• Have you tried the latest master version from Git? Yes

• Do you have some idea of what the underlying problem may be? https://mitogen.networkgenomics.com/ansible_detailed.html#common-problems has instructions to help figure out the likely cause and how to gather relevant logs. No

• Mention your host and target OS and versions Rocky 8.8

• Mention your host and target Python versions Python 3.8

• If reporting a performance issue, mention the number of targets and a rough description of your workload (lots of copies, lots of tiny file edits, etc.)

• If reporting a crash or hang in Ansible, please rerun with -vvv and include 200 lines of output around the point of the error, along with a full copy of any traceback or error text in the log. Beware "-vvv" may include secret data! Edit as necessary before posting.

• If reporting any kind of problem with Ansible, please include the Ansible version along with output of "ansible-config dump --only-changed". Empty