syntax_data: {"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"assert_eq!(is_transmutable(&layout,"}]}
source_snippet:             assert_eq!(is_transmutable(&layout, &layout, Assume::default()), Answer::Yes);
context_before:             let layout = layout::Tree::<Def, !, !>::nonzero(width);
context_after:         }