syntax_data: {"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"panic!(\"type"}]}
source_snippet:             panic!("type {:?} has a first field with non-zero offset {offset_from_start:?}", arg.ty)
context_before:         ) if offset_from_start != Size::ZERO => {
context_after:         }