syntax_data: {"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"#[subdiagnostic]"}]}
source_snippet:     #[subdiagnostic]
context_before:     pub(crate) build_target_features_count: usize,
context_after:     pub(crate) unsafe_not_inherited_note: Option<UnsafeNotInheritedLintNote>,