error[E0658]: cfg_attr with zero or more than one attributes is experimental (see issue #54881) | |
--> $DIR/feature-gate-cfg-attr-multi-2.rs:1:1 | |
| | |
LL | #![cfg_attr(all(),)] | |
| ^^^^^^^^^^^^^^^^^^^^ | |
| | |
= help: add #![feature(cfg_attr_multi)] to the crate attributes to enable | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0658`. |