warning: unexpected `cfg` condition value: `foo`
  --> $DIR/no-values.rs:6:7
   |
LL | #[cfg(feature = "foo")]
   |       ^^^^^^^--------
   |              |
   |              help: remove the value
   |
   = note: no expected value for `feature`
   = note: `#[warn(unexpected_cfgs)]` on by default

warning: unexpected `cfg` condition value: `foo`
  --> $DIR/no-values.rs:10:7
   |
LL | #[cfg(test = "foo")]
   |       ^^^^--------
   |           |
   |           help: remove the value
   |
   = note: no expected value for `test`

warning: 2 warnings emitted