{"ast_node_type":"function","tokens":[{"end":76,"kind":"keyword","start":0,"text":"fn"}]}
fn sccs_info<'tcx>(infcx: &BorrowckInferCtxt<'tcx>, sccs: &ConstraintSccs) {
#[instrument(skip(infcx, sccs), level = "debug")]
    use crate::renumber::RegionCtxt;