syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"assert_matches!(self.infcx.typing_mode(),"}]}
source_snippet:         assert_matches!(self.infcx.typing_mode(), TypingMode::Coherence);
context_before:     pub fn enable_tracking_intercrate_ambiguity_causes(&mut self) {
context_after:         assert!(self.intercrate_ambiguity_causes.is_none());