syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"Traits(ExpectedFound<I::DefId>),"}]}
source_snippet:     Traits(ExpectedFound<I::DefId>),
context_before:     ArgumentSorts(ExpectedFound<I::Ty>, usize),
context_after:     VariadicMismatch(ExpectedFound<bool>),