syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"_"}]}
source_snippet:             _ => return Err(TypeError::Mismatch),
context_before:             (ty::ExprKind::Cast(a_kind), ty::ExprKind::Cast(b_kind)) if a_kind == b_kind => {}
context_after:         }