syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"//"}]}
source_snippet: // See https://github.com/rust-lang/rust/issues/90317.
context_before: // `LocalExpnId` must not implement `Ord` or `PartialOrd`.
context_after: impl !Ord for LocalExpnId {}