syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"#[instrument(level"}]}
source_snippet: #[instrument(level = "trace", skip(relation), ret)]
context_before: /// handled by the caller.
context_after: pub fn structurally_relate_tys<I: Interner, R: TypeRelation<I>>(