error[E0658]: Unsized tuple coercion is not stable enough for use and is subject to change (see issue #42877) | |
--> $DIR/feature-gate-unsized_tuple_coercion.rs:12:24 | |
| | |
12 | let _ : &(Send,) = &((),); | |
| ^^^^^^ | |
| | |
= help: add #![feature(unsized_tuple_coercion)] to the crate attributes to enable | |
error: aborting due to previous error | |