1 error[E0658]: Unsized tuple coercion is not stable enough for use and is subject to change (see issue #42877)
2 --> $DIR/feature-gate-unsized_tuple_coercion.rs:12:24
4 LL | let _ : &(Send,) = &((),);
7 = help: add #![feature(unsized_tuple_coercion)] to the crate attributes to enable
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0658`.