syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"ty::ConstKind::Error(_)"}]}
source_snippet:             ty::ConstKind::Error(_) => write!(self, "{{const error}}")?,
context_before:             ty::ConstKind::Expr(expr) => self.pretty_print_const_expr(expr, print_ty)?,
context_after:         };