warning: unexpected `cfg` condition value
  --> $DIR/compact-values.rs:11:28
   |
LL | #[cfg(target(os = "linux", arch = "X"))]
   |                            ^^^^^^^^^^
   |
   = note: expected values for `target_arch` are: `aarch64`, `arm`, `avr`, `bpf`, `hexagon`, `loongarch64`, `m68k`, `mips`, `mips64`, `msp430`, `nvptx64`, `powerpc`, `powerpc64`, `riscv32`, `riscv64`, `s390x`, `sparc`, `sparc64`, `wasm32`, `wasm64`, `x86`, `x86_64`
   = note: `#[warn(unexpected_cfgs)]` on by default

warning: 1 warning emitted