syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"PolarityMismatch(#[type_visitable(ignore)]"}]}
source_snippet:     PolarityMismatch(#[type_visitable(ignore)] ExpectedFound<ty::PredicatePolarity>),
context_before:     Mismatch,
context_after:     SafetyMismatch(#[type_visitable(ignore)] ExpectedFound<I::Safety>),