syntax_data: {"ast_node_type":"other","tokens":[{"end":18,"kind":"keyword","start":0,"text":"};"}]}
source_snippet:                 };
context_before:                     bug!("unexpected FieldsShape for sized layout of {ty:?}: {:?}", layout.fields);
context_after:                 let FieldsShape::Arbitrary { offsets: unsized_offsets, .. } =