syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"self.intercrate_ambiguity_causes"}]}
source_snippet:         self.intercrate_ambiguity_causes = Some(FxIndexSet::default());
context_before:         assert!(self.intercrate_ambiguity_causes.is_none());
context_after:         debug!("selcx: enable_tracking_intercrate_ambiguity_causes");