syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"#[derive(Copy,"}]}
source_snippet: #[derive(Copy, Clone, PartialEq, Eq, Hash)]
context_after: #[cfg_attr(feature = "nightly", derive(Decodable, Encodable, HashStable_NoContext))]