{"ast_node_type":"import","tokens":[{"end":82,"kind":"keyword","start":0,"text":"//"}]}
        // We use an `IndexSet` because the list needs to be topologically sorted.
        // For some reason in some repositories we have duplicate crates, so we use a set and not `Vec`.
        let mut all_crates = FxIndexSet::with_capacity_and_hasher(self.arena.len(), FxBuildHasher);