| error[E0658]: use of unstable library feature 'ipu_flatten' | |
| --> $DIR/inference_unstable_forced.rs:11:20 | |
| | | |
| LL | assert_eq!('x'.ipu_flatten(), 0); | |
| | ^^^^^^^^^^^ | |
| | | |
| = note: for more information, see https://github.com/rust-lang/rust/issues/99999 | |
| = 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`. |