Check mode is broken in 0.24.0

[erikgb]

We always run our playbooks in check mode from feature branches, and it seems like version 0.24.0 broke this workflow. Should be fairly simple to fix, and I hope you want to support this workflow. The error:

TASK [prometheus.prometheus._common : Download blackbox_exporter-0.25.0.linux-amd64.tar.gz] ***
ok: [REDACTED -> localhost]
ok: [REDACTED -> localhost]
TASK [prometheus.prometheus._common : Fetch checksum list for blackbox_exporter-0.25.0.linux-amd64.tar.gz] ***
skipping: [REDACTED ]
TASK [prometheus.prometheus._common : Parse checksum list for blackbox_exporter-0.25.0.linux-amd64.tar.gz] ***
fatal: [REDACTED -> localhost]: FAILED! => 
  msg: |-
    The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'content'. 'dict object' has no attribute 'content'
  
    The error appears to be in '/home/ansible/.ansible/collections/ansible_collections/prometheus/prometheus/roles/_common/tasks/install.yml': line 95, column 11, but may
    be elsewhere in the file depending on the exact syntax problem.
  
    The offending line appears to be:
  
  
            - name: "Parse checksum list for {{ __common_binary_basename }}"
              ^ here
    We could be wrong, but this one looks like it might be an issue with
    missing quotes. Always quote template expression brackets when they
    start a value. For instance:
  
        with_items:
          - {{ foo }}
  
    Should be written as:
  
        with_items:
          - "{{ foo }}"

The fetch is skipped (because of running in check mode) - making the parse task fail. I would suggest forcing the fetch to also run in check mode, since it is not modifying anything, but open to other ways of fixing this.

[copolycube]

Hello,
I can confirm this on my side for alertmanager and prometheus

alertmanager :

TASK [prometheus.prometheus._common : Parse checksum list for alertmanager-0.27.0.linux-amd64.tar.gz] ***
Wednesday 29 January 2025  17:27:20 +0000 (0:00:00.064)       0:00:23.950 ***** 
Wednesday 29 January 2025  17:27:20 +0000 (0:00:00.064)       0:00:23.949 ***** 
fatal: [REDACTED -> localhost]: FAILED! => 
  msg: |-
    The task includes an option with an undefined variable.. 'dict object' has no attribute 'content'
  
    The error appears to be in 'ansible/vendor-collections/ansible_collections/prometheus/prometheus/roles/_common/tasks/install.yml': line 95, column 11, but may
    be elsewhere in the file depending on the exact syntax problem.
  
    The offending line appears to be:
  
  
            - name: "Parse checksum list for {{ __common_binary_basename }}"
              ^ here
    We could be wrong, but this one looks like it might be an issue with
    missing quotes. Always quote template expression brackets when they
    start a value. For instance:
  
        with_items:
          - {{ foo }}
  
    Should be written as:
  
        with_items:
          - "{{ foo }}"

prometheus:

TASK [prometheus.prometheus._common : Parse checksum list for prometheus-3.1.0.linux-amd64.tar.gz] ***
Wednesday 29 January 2025  17:27:29 +0000 (0:00:00.066)       0:01:48.969 ***** 
Wednesday 29 January 2025  17:27:29 +0000 (0:00:00.066)       0:01:48.968 ***** 
fatal: [REDACTED -> localhost]: FAILED! => 
  msg: |-
    The task includes an option with an undefined variable.. 'dict object' has no attribute 'content'
  
    The error appears to be in 'ansible/vendor-collections/ansible_collections/prometheus/prometheus/roles/_common/tasks/install.yml': line 95, column 11, but may
    be elsewhere in the file depending on the exact syntax problem.
  
    The offending line appears to be:
  
  
            - name: "Parse checksum list for {{ __common_binary_basename }}"
              ^ here
    We could be wrong, but this one looks like it might be an issue with
    missing quotes. Always quote template expression brackets when they
    start a value. For instance:
  
        with_items:
          - {{ foo }}
  
    Should be written as:
  
        with_items:
          - "{{ foo }}"
          - ```

[gardar]

There is a pending fix in #524