syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"#[derive(Copy,"}]}
source_snippet: #[derive(Copy, Clone, PartialEq, Eq, Hash, HashStable)]
context_before: /// Use this rather than `RegionKind`, whenever possible.
context_after: #[rustc_pass_by_value]