syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // that the auto traits are sorted *and* printed via p).
context_before:         // FIXME(eddyb) avoid printing twice (needed to ensure
context_after:         let mut auto_traits: Vec<_> = predicates.auto_traits().collect();