syntax_data: {"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"max_atomic_width:"}]}
source_snippet:             max_atomic_width: Some(64),
context_before:             features: "+v7,+vfp3,-d32,+thumb2,-neon".into(),
context_after:             mcount: "\u{1}mcount".into(),