syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// Information collected from typeck, including spans for subpatterns invalid in Rust 2024.
context_before:     default_mode_labels: FxIndexMap<Span, Mutability>,
context_after:     info: &'a Rust2024IncompatiblePatInfo,