I do something very similar, though I read I should avoid codes 1 and 2 so my error codes start at 3: https://github.com/RPGillespie6/fastcov/blob/master/fastco

I do something very similar, though I read I should avoid codes 1 and 2 so my error codes start at 3: https://github.com/RPGillespie6/fastcov/blob/master/fastcov.py#L47 https://github.com/RPGillespie6/fastcov/blob/master/fastcov.... That way automated CI pipelines (or whatever) can switch on the return code if needed rather than try to parse stderr