syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"panic!(\"unexpected"}]}
source_snippet:                 panic!("unexpected type `{self_ty:?}`")
context_before:             ty::Infer(ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => {
context_after:             }