syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"cx.local_decls[local].source_info.span,"}]}
source_snippet:                 cx.local_decls[local].source_info.span,
context_before:             PlaceBase::Local(local) => span_bug!(
context_after:                 "could not resolve local: {local:#?} + {:?}",