warning: the feature `effects` is incomplete and may not be safe to use and/or cause compiler crashes | |
--> $DIR/const-in-closure.rs:4:30 | |
| | |
LL | #![feature(const_trait_impl, effects)] | |
| ^^^^^^^ | |
| | |
= note: see issue #102090 <https://github.com/rust-lang/rust/issues/102090> for more information | |
= note: `#[warn(incomplete_features)]` on by default | |
warning: 1 warning emitted | |