syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"assert!(self.query_mode"}]}
source_snippet:                 assert!(self.query_mode == TraitQueryMode::Canonical);
context_before:             Err(SelectionError::Overflow(OverflowError::Canonical)) => {
context_after:                 Err(SelectionError::Overflow(OverflowError::Canonical))