Enable 'doc_cfg' only when supported.

Closes #177.
rwf2 · Dec 29, 2021 · 8871b9a · 8871b9a
1 parent 2ffdb96
commit 8871b9a
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diff --git a/Cargo.toml b/Cargo.toml
@@ -34,7 +34,7 @@ hkdf = { version = "0.12.0", optional = true }
 subtle = { version = "2.3", optional = true }
 
 [build-dependencies]
-version_check = "0.9"
+version_check = "0.9.4"
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/build.rs b/build.rs
@@ -1,5 +1,5 @@
 fn main() {
- if let Some(true) = version_check::is_feature_flaggable() {
+ if let Some(true) = version_check::supports_feature("doc_cfg") {
  println!("cargo:rustc-cfg=nightly");
  }
 }