syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// This is why this method doesn't return `Option<bool>`.
context_before:     /// such a bound obviously never can be called, but that doesn't mean it shouldn't typecheck.
context_after:     #[instrument(skip(tcx), level = "debug")]