syntax_data: {"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"span_bug!(span,"}]}
source_snippet:             span_bug!(span, "break value must be a scope")
context_before:         let rustc_middle::thir::ExprKind::Scope { value, .. } = self.thir[value].kind else {
context_after:         };