Bug: cortextool output lint going to stderr

[PatrikMuniak]

I would expect when a rule doesn't fine any issues to have it's output to go to stdout and only when there are errors the output of that to go to stderr
I was testing the rules linter:

 ./cortextool rules lint rules/applications/nap-tom/cortex-rules.yaml > out 2>error

out: empty
error:

time="2022-06-07T14:25:04+01:00" level=info msg="SUCCESS: 1 rules found, 0 linted expressions"

if I put an error in the yaml rule file I get the same, empty out file and error file:

time="2022-06-07T14:31:37+01:00" level=error msg="unable parse rules file" error="yaml: line 6: could not find expected ':'" file=rules/applications/nap-tom/cortex-rules.yaml
cortextool: error: prepare operation unsuccessful, unable to parse rules files: file read error, try --help