1 error[E0658]: const generics are unstable
2 --> $DIR/const-param-in-trait-ungated.rs:1:13
4 LL | trait Trait<const T: ()> {}
7 = note: for more information, see https://github.com/rust-lang/rust/issues/44580
8 = help: add `#![feature(const_generics)]` to the crate attributes to enable
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0658`.