Ansible: conflicting action statements: group, tags - tags

Question

I have following code in on of roles:
- name: Create user group
group: name={{ user.group }} state=present
tags:
- user
When I run ansible-playbook -i localhost --ask-become-pass playbook.yml I catch an error:
ERROR! conflicting action statements: group, tags
The error appears to have been in '/home/user/spark/roles/base/tasks/main.yml': line 12, column 3, but may
be elsewhere in the file depending on the exact syntax problem.
The offending line appears to be:
- name: Create user group
^ here
...
exception type: <class 'ansible.errors.AnsibleParserError'>
exception: conflicting action statements: group, tags
...
Full error log: https://www.pastiebin.com/59cb4faf9ae35
If I remove tags it runs without error.
It was compnow it is exception: unexpected parameter type in action: after I leave only name and tags. Full error log: pastiebin.com/59cb5b2996a10letely ok all the time but now it works like this without any identifiable reason. I tried to use previous working version of playbook (through git checkout ) but error exists anyway :(
I would be grateful for any hint on this.
P.S. I have fork of ansible playbook for Archlinux machine.
P.P.S.
ansible 2.4.0.0
config file = /home/user/spark/ansible.cfg
configured module search path = [u'/home/user/spark/library/ansible-aur']
ansible python module location = /usr/lib/python2.7/site-packages/ansible
executable location = /usr/bin/ansible
python version = 2.7.14 (default, Sep 20 2017, 01:25:59) [GCC 7.2.0]
Ansible aur:
[submodule "library/ansible-aur"]
path = library/ansible-aur
url = https://github.com/pigmonkey/ansible-aur.git
ansible.cfg
[defaults]
library = ./library/ansible-aur
UPD. If I remove group keyword like this:
- name: Create user group
tags:
- user
I catch an error: unexpected parameter type in action: after I leave only name and tags. Full error log: pastiebin.com/59cb5b2996a10

Answer 1

That's pretty funny story.
I have vim plugin that creates ctags tags for a project. And it created file named: spark/library/ansible-aur/tags.
It wasn't python file or something. It was just common ctags file.
I found that it was the root of all troubles by using pdb debugger with ansible code.
I've found one of error strings I saw: conflicting action statements in ansible code:
> /usr/lib/python2.7/site-packages/ansible/parsing/mod_args.py(293)parse()
-> raise AnsibleParserError("conflicting action statements: %s, %s" % (action, item), obj=self._task_ds)
And injected pdb.set_trace() there.
Then I make some study:
(Pdb) item
u'tags'
(Pdb) item in module_loader
True
(Pdb) module_loader.find_plugin(item)
u'/home/user/spark/library/ansible-aur/tags'
Last line was kind of hint. After deleting that tags file everything was completely ok.
Corresponding bug report: https://github.com/ansible/ansible/issues/31070