error[E0658]: use of unstable library feature 'ipu_flatten' | |
--> $DIR/inference_unstable_forced.rs:11:20 | |
| | |
LL | assert_eq!('x'.ipu_flatten(), 0); | |
| ^^^^^^^^^^^ | |
| | |
= note: see issue #99999 <https://github.com/rust-lang/rust/issues/99999> for more information | |
= help: add `#![feature(ipu_flatten)]` to the crate attributes to enable | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0658`. |