syntax_data: {"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"ty::Error(_)"}]}
source_snippet:             ty::Error(_) => return,
context_before:             ty::Coroutine(..) => ExternAbi::Rust,
context_after:             _ => span_bug!(body.span, "unexpected body ty: {:?}", body_ty),