syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"TraitCandidate"}]}
source_snippet:     TraitCandidate { source: CandidateSource<I>, result: QueryResult<I> },
context_before:     /// A candidate for proving a trait or alias-relate goal.
context_after:     /// Used in the probe that wraps normalizing the non-self type for the unsize