syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"ocx.structurally_normalize_ty(&cause,"}]}
source_snippet:             ocx.structurally_normalize_ty(&cause, param_env, ty).unwrap_or_else(|_| {
context_before:         |ty| {
context_after:                 Ty::new_error_with_message(