syntax_data: {"ast_node_type":"other","tokens":[{"end":22,"kind":"keyword","start":0,"text":"#[derive(Clone,"}]}
source_snippet: #[derive(Clone, Copy)]
context_before: /// Used by [`Builder::lower_let_expr`] when lowering [`ExprKind::Let`].
context_after: pub(crate) enum DeclareLetBindings {