Function evaluate_with 

pub fn evaluate_with(
    dirs: &Dirs,
    trusted: &BTreeMap<String, Vec<String>>,
    options: &Options,
    errors: usize,
    progress: &mut dyn FnMut(&Progress),
    cancel: &Cancel,
) -> Result<(Evaluation, Detail), LearnError>

evaluate, and what the test said message by message (detail), with up to errors errors of each kind (sioul spam eval --errors).