syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"visit::walk_expr(&mut"}]}
source_snippet:                 visit::walk_expr(&mut visitor, expr);
context_before:                 let mut visitor = LayoutConstrainedPlaceVisitor::new(self.thir, self.tcx);
context_after:                 if visitor.found {