warning: unexpected `xxx` condition value: `xxx`
  --> $DIR/and-more-diagnostic.rs:11:10
   |
LL |     cfg!(target_feature = "zebra");
   |          ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: expected values for `xxx` are: `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, `xxx`, and `xxx` and X more
   = 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