- feature_gate::emit_feature_err(&self.tcx.sess.parse_sess,
- sym::unsized_tuple_coercion,
- self.cause.span,
- feature_gate::GateIssue::Language,
- feature_gate::EXPLAIN_UNSIZED_TUPLE_COERCION);
+ feature_gate::emit_feature_err(
+ &self.tcx.sess.parse_sess,
+ sym::unsized_tuple_coercion,
+ self.cause.span,
+ feature_gate::GateIssue::Language,
+ "unsized tuple coercion is not stable enough for use and is subject to change",
+ );