warning: unexpected `cfg` condition value: `unk`
--> $DIR/order-independant.rs:13:7
|
LL | #[cfg(a = "unk")]
| ^^^^^^^^^
= note: expected values for `a` are: (none), `b`
= help: to expect this configuration use `--check-cfg=cfg(a, values("unk"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
warning: 1 warning emitted
