syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // If we're not on nightly, we don't want to print unstable options
context_before:         .filter_map(|(name, kind)| {
context_after:             if !is_nightly && !is_print_request_stable(*kind) {