syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"#[note(mir_build_privately_uninhabited)]"}]}
source_snippet:     #[note(mir_build_privately_uninhabited)]
context_before:     pub(crate) adt_defined_here: Option<AdtDefinedHere<'tcx>>,
context_after:     pub(crate) witness_1_is_privately_uninhabited: bool,