LL | #![cfg_attr(broken, no_core)]
| ^^^^^^^
|
- = note: for more information, see https://github.com/rust-lang/rust/issues/29639
+ = note: see issue #29639 <https://github.com/rust-lang/rust/issues/29639> for more information
= help: add `#![feature(no_core)]` to the crate attributes to enable
error: aborting due to previous error