syntax_data: {"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // Heuristics: show the diagnostics when there are no candidates in crate.
context_before:                 debug!("evaluate_stack: intercrate_ambiguity_causes is some");
context_after:                 if let Ok(candidate_set) = self.assemble_candidates(stack) {