error[E0658]: no_core is experimental (see issue #29639) | |
--> $DIR/cfg-attr-crate-2.rs:15:21 | |
| | |
LL | #![cfg_attr(broken, no_core)] //~ ERROR no_core is experimental | |
| ^^^^^^^ | |
| | |
= 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`. |