syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // tidy-alphabetical-start
context_before: const MIPS_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
context_after:     ("fp64", Unstable(sym::mips_target_feature), &[]),