chore(core): move wgpu_validate_locks cfg expectation to build.rs

Author: ErichDonGubler

wgpu-core/Cargo.toml

@@ -29,9 +29,6 @@ targets = [
 # Cargo machete can't check build.rs dependencies. See https://github.com/bnjbvr/cargo-machete/issues/100
 ignored = ["cfg_aliases"]
 
-[lints.rust]
-unexpected_cfgs = { level = "warn", check-cfg = ['cfg(wgpu_validate_locks)'] }
-
 [lib]
 
 [features]

wgpu-core/build.rs

@@ -24,4 +24,5 @@ fn main() {
 
         supports_64bit_atomics: { target_has_atomic = "64" }
     }
+    println!("cargo::rustc-check-cfg=cfg(wgpu_validate_locks)");
 }