JSON formatter produces invalid JSON file

[dsiguero]

Describe the bug
krr simple --logtostderr -f json > result.json does not produce valid JSON.

To Reproduce
Steps to reproduce the behavior:

$ krr simple --logtostderr -f json > result.json
[...]

$ jq '.' result.json
jq: parse error: Invalid numeric literal at line 1, column 12

$ head -n1 result.json
Calculating Recommendation |████████████████████████████████████████| 50 in 10.8s (4.61/s)

Expected behavior
The resulting JSON file should be valid.

Are you interested in contributing a fix for this?
Yes.

Additional context:

• OS: macOS Sonoma 14.2.1
• Installation method: brew
• krr version: v1.6.0

[dsiguero]

This seems to also apply to the YAML formatter as well, when running the following command:

$ krr simple --logtostderr -f yaml > result.yaml
[...]

$ yq '.' result.yaml
Error: bad file 'out.yaml': yaml: line 2: mapping values are not allowed in this context

$ head -n1 result.yaml
Calculating Recommendation |████████████████████████████████████████| 50 in 11.2s (4.46/s)

[rohank07]

I believe this is resolved on the main branch - waiting on a new release