| error[E0658]: no_core is experimental (see issue #29639) | |
| --> $DIR/cfg-attr-crate-2.rs:6:21 | |
| | | |
| LL | #![cfg_attr(broken, no_core)] | |
| | ^^^^^^^ | |
| | | |
| = 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`. |