warning: unexpected `cfg` condition name: `target_oz`
  --> $DIR/well-known-names.rs:7:7
   |
LL | #[cfg(target_oz = "linux")]
   |       ^^^^^^^^^^^^^^^^^^^
   |
   = help: to expect this configuration use `--check-cfg=cfg(target_oz, values("linux"))`
   = 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
help: there is a config with a similar name and value
   |
LL | #[cfg(target_os = "linux")]
   |       ~~~~~~~~~

warning: unexpected `cfg` condition name: `features`
  --> $DIR/well-known-names.rs:14:7
   |
LL | #[cfg(features = "foo")]
   |       ^^^^^^^^^^^^^^^^
   |
   = help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows`
   = help: to expect this configuration use `--check-cfg=cfg(features, values("foo"))`
   = 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/well-known-names.rs:18:7
   |
LL | #[cfg(feature = "foo")]
   |       ^^^^^^^^^^^^^^^
   |
   = help: to expect this configuration use `--check-cfg=cfg(feature, values("foo"))`
   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration

warning: unexpected `cfg` condition name: `uniw`
  --> $DIR/well-known-names.rs:22:7
   |
LL | #[cfg(uniw)]
   |       ^^^^ help: there is a config with a similar name: `unix`
   |
   = help: to expect this configuration use `--check-cfg=cfg(uniw)`
   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration

warning: 4 warnings emitted