syntax_data: {"ast_node_type":"other","tokens":[{"end":13,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             }
context_before:                 span_bug!(body.span, "`Future`s are not fused inherently")
context_after:             CoroutineKind::Coroutine(_) => span_bug!(body.span, "`Coroutine`s cannot be fused"),