error[E0658]: the `#[no_core]` attribute is an experimental feature | |
--> $DIR/cfg-attr-multi-invalid-2.rs:4:29 | |
| | |
LL | #![cfg_attr(broken, no_std, no_core)] | |
| ^^^^^^^ | |
| | |
= 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 | |
For more information about this error, try `rustc --explain E0658`. |