| warning: unexpected `cfg` condition name: `unknown_key` | 
 |   --> $DIR/exhaustive-names-values.rs:10:7 | 
 |    | | 
 | LL | #[cfg(unknown_key = "value")] | 
 |    |       ^^^^^^^^^^^^^^^^^^^^^ | 
 |    | | 
 |    = help: to expect this configuration use `--check-cfg=cfg(unknown_key, values("value"))` | 
 |    = 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: unexpected `cfg` condition value: `value` | 
 |   --> $DIR/exhaustive-names-values.rs:14:7 | 
 |    | | 
 | LL | #[cfg(target_vendor = "value")] | 
 |    |       ^^^^^^^^^^^^^^^^^^^^^^^ | 
 |    | | 
 |    = note: expected values for `target_vendor` are: `amd`, `apple`, `espressif`, `fortanix`, `ibm`, `kmc`, `mti`, `nintendo`, `nvidia`, `openwrt`, `pc`, `risc0`, `sony`, `sun`, `unikraft`, `unknown`, `uwp`, `vex`, `win7`, and `wrs` | 
 |    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration | 
 |  | 
 | warning: unexpected `cfg` condition name: `feature` | 
 |   --> $DIR/exhaustive-names-values.rs:18:7 | 
 |    | | 
 | LL | #[cfg(feature = "unk")] | 
 |    |       ^^^^^^^^^^^^^^^ | 
 |    | | 
 |    = help: to expect this configuration use `--check-cfg=cfg(feature, values("unk"))` | 
 |    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration | 
 |  | 
 | warning: unexpected `cfg` condition name: `feature` | 
 |   --> $DIR/exhaustive-names-values.rs:24:7 | 
 |    | | 
 | LL | #[cfg(feature = "std")] | 
 |    |       ^^^^^^^^^^^^^^^ | 
 |    | | 
 |    = help: to expect this configuration use `--check-cfg=cfg(feature, values("std"))` | 
 |    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration | 
 |  | 
 | warning: 4 warnings emitted | 
 |  |