syntax_data: {"ast_node_type":"variable","tokens":[{"end":53,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                     let layout = layout_of(cx, *ty)?;
context_before:                 ty::Ref(region, ty, mutability) => {
context_after:                     let referent_align = layout.align.abi.bytes_usize();