warning: unexpected `cfg` condition value: `value`
  --> $DIR/exhaustive-values.rs:9:7
   |
LL | #[cfg(test = "value")]
   |       ^^^^----------
   |           |
   |           help: remove the value
   |
   = note: no expected value for `test`
   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration
   = note: `#[warn(unexpected_cfgs)]` on by default

warning: 1 warning emitted