syntax_data: {"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                     let guar = tcx.dcx().span_delayed_bug(
context_before:                 if def.repr().pack.is_some() && def.repr().align.is_some() {
context_after:                         tcx.def_span(def.did()),