syntax_data: {"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let rustc_middle::thir::ExprKind::Scope { value, .. } = self.thir[value].kind else {
context_before:         // A break can only break out of a scope, so the value should be a scope.
context_after:             span_bug!(span, "break value must be a scope")