| error[E0658]: naming constants with `_` is unstable (see issue #54912) |
| --> $DIR/feature-gate-underscore_const_names.rs:17:1 |
| | |
| LL | / const _ : () = { |
| LL | | use std::marker::PhantomData; |
| LL | | struct ImplementsTrait<T: Trt>(PhantomData<T>); |
| LL | | let _ = ImplementsTrait::<Str>(PhantomData); |
| LL | | () |
| LL | | }; |
| | |__^ |
| | |
| = help: add #![feature(underscore_const_names)] to the crate attributes to enable |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0658`. |
