Cannot print rules since loading a recording rule

[adeverteuil]

I loaded this:

namespace: test
groups:
- name: default
  rules:
    - alert: AlwaysFiring
      record: ""
      for: 0s
      expr: 1 == bool 1
    - record: "agent:custom_server_info:up"
      alert: ""
      expr: |2
          custom_server_info * 0
        unless on (agent_hostname)
          up{job="integrations/agent"}
        or on (agent_hostname)
          custom_server_info

Since then, I can't print the rules anymore.

FATA[0000] unable to read rules from cortex, yaml: line 10: did not find expected key

I can query the API and get the expected YAML.

curl -u $CORTEX_USER:$CORTEX_KEY "$CORTEX_URL/api/v1/rules"
bug:
    - name: default
      rules:
        - record: test:scalar:bug
          expr: vector(1)
test:
    - name: default
      rules:
        - alert: AlwaysFiring
          expr: 1 == bool 1
        - record: agent:custom_server_info:up
          expr: |4
              custom_server_info * 0
            unless on (agent_hostname)
              up{job="integrations/agent"}
            or on (agent_hostname)
              custom_server_info

To try to isolate the bug, I deleted all the rules and I tried loading this one:

namespace: bug
groups:
- name: test
  rules:
    - record: "test:scalar:bug"
      expr: |2
          vector(1)
        or
          vector(2)

cortextool rules load rules-bug.yml \
--address=$CORTEX_URL \
--id=$CORTEX_USER \
--key=$CORTEX_KEY \
--log.level=debug

INFO[0000] log level set to debug
DEBU[0000] path built to request rule group              url=/api/prom/rules/bug/test
DEBU[0000] sending request to cortex api                 method=GET url="https://prometheus-us-central1.grafana.net/api/prom/rules/bug/test"
DEBU[0000] checking response                             status="404 Not Found"
DEBU[0000] resource not found                            fields.msg="request failed with response body group does not exist\n" status="404 Not Found"
DEBU[0000] sending request to cortex api                 method=POST url="https://prometheus-us-central1.grafana.net/api/prom/rules/bug"
DEBU[0000] checking response                             status="400 Bad Request"
ERRO[0000] requests failed                               fields.msg="request failed with response body unable to decoded rule group\n" status="400 Bad Request"
ERRO[0000] unable to load rule group                     error="failed request to the cortex api" group=test namespace=bug

I was able to load this rule group using curl.

name: bug
rules:
  - record: "test:scalar:bug"
    expr: |2
        vector(1)
      or
        vector(2)

curl -u $CORTEX_USER:$CORTEX_KEY "$CORTEX_URL/api/prom/rules/bug" -H "Content-Type: application/yaml" --data-binary @rules-bug-api.yml -i
HTTP/2 202                                                                                                                                                                                                           
content-length: 58                                                                                                                                                                                                   
content-type: application/json                                                                            
date: Fri, 20 Nov 2020 16:41:23 GMT                                                                                                                                                                                  
via: 1.1 google                                                                                                                                                                                                      
alt-svc: clear                                                                                            
                                                                                                          
{"status":"success","data":null,"errorType":"","error":""}

I'm still unable to print the rules:

INFO[0000] log level set to debug
DEBU[0000] sending request to cortex api                 method=GET url="https://prometheus-us-central1.grafana.net/api/prom/rules"
DEBU[0000] checking response                             status="200 OK"
FATA[0000] unable to read rules from cortex, yaml: line 3: did not find expected key

But I can GET them from the API:

curl -u $CORTEX_USER:$CORTEX_KEY "$CORTEX_URL/api/prom/rules"
bug:
    - name: bug
      rules:
        - record: test:scalar:bug
          expr: |4
              vector(1)
            or
              vector(2)

Also, this rule does not run! I don't see the test:scalar:bug metric in my database.

If I create the same rule on a single line, then it works, so I think both Cortex and Cortextool has an issue with the YAML block quotes with an indentation indicator syntax as described in Prometheus docs.