error: late-bound const parameters cannot be used currently --> $DIR/const-bound.rs:5:15 | LL | for || -> () {}; | ^ warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes --> $DIR/const-bound.rs:1:37 | LL | #![feature(closure_lifetime_binder, non_lifetime_binders)] | ^^^^^^^^^^^^^^^^^^^^ | = note: see issue #108185 for more information = note: `#[warn(incomplete_features)]` on by default error: late-bound const parameter not allowed on closures --> $DIR/const-bound.rs:5:9 | LL | for || -> () {}; | ^^^^^^^^^^^^ error: aborting due to 2 previous errors; 1 warning emitted