syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"SafetyMismatch(#[type_visitable(ignore)]"}]}
source_snippet:     SafetyMismatch(#[type_visitable(ignore)] ExpectedFound<I::Safety>),
context_before:     PolarityMismatch(#[type_visitable(ignore)] ExpectedFound<ty::PredicatePolarity>),
context_after:     AbiMismatch(#[type_visitable(ignore)] ExpectedFound<I::Abi>),