nested block with error handling

gistfile1.txt

---
- name: test nested blocks
  hosts: localhost
  tasks:
    - block:
        - name: first outer level task
          debug:
            msg: first outer level task
        - block:
            - name: first inner level task
              debug:
                msg: first inner level task
            - name: inner task that fails
              fail:
                msg: inner task that fails
            - name: inner task that should never execute
              debug:
                msg: inner task that should never execute
          always:
            - name: first inner block always task
              debug:
                msg: first inner block always task ansible_failed_result is {{ ansible_failed_result | d("undefined") | to_nice_json }}
        - block:
            - name: second block inner level task
              debug:
                msg: second block inner level task
        - name: second outer level task
          debug:
            msg: second outer level task
      rescue:
        - name: outer block rescue task
          debug:
            msg: outer block rescue task ansible_failed_result is {{ ansible_failed_result | d("undefined") | to_nice_json }}

the output looks like this:

TASK [inner task that fails] ***************************************************
task path: /home/rmeggins/ansible_sandbox/nested-block.yml:13
fatal: [localhost]: FAILED! => {
    "changed": false
}

MSG:

inner task that fails

TASK [first inner block always task] *******************************************
task path: /home/rmeggins/ansible_sandbox/nested-block.yml:20
ok: [localhost] => {}

MSG:

first inner block always task ansible_failed_result is "undefined"

TASK [outer block rescue task] *************************************************
task path: /home/rmeggins/ansible_sandbox/nested-block.yml:31
ok: [localhost] => {}

MSG:

outer block rescue task ansible_failed_result is "undefined"