syntax_data: {"ast_node_type":"variable","tokens":[{"end":44,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if let Err(guar) = ty.error_reported() {
context_before:     // was actually computable (like if the `ty::Error` showed up only in a `PhantomData`).
context_after:         return Err(error(cx, LayoutError::ReferencesError(guar)));