Function task_report 

pub fn task_report(
    connection: &mut PgConnection,
    global: &mut HashMap<String, String>,
    corpus: &Corpus,
    service: &Service,
    severity: Option<String>,
    category: Option<String>,
    what: Option<String>,
    params: &Option<ReportParams>,
) -> Vec<HashMap<String, String>>

Renders a task report, filling in the pagination + provenance globals the templates consume. Reads over the caller-supplied (pooled) connection — no per-request fresh Backend::default().