Function decide 

pub fn decide(f: &RegressionFacts) -> RegressionReason

The reason, by precedence (highest first): acceptance_off, no_story, no_scenarios, author_failed, author_wrote_none, tests_not_collected, not_red, already_passing — for a task judged by its own acceptance tests (a convergence gap, a quick change); a story task’s reason comes from its progress on the story’s oracle.