{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"trace!(\"size_and_align_of_dst(ty={},"}]}
    trace!("size_and_align_of_dst(ty={}, info={:?}): layout: {:?}", t, info, layout);
    let layout = bx.layout_of(t);
    if layout.is_sized() {