fix: native-tls and rustls-tls are mutually exclusive

Author: roderickvd

.github/workflows/build.yml

@@ -75,7 +75,7 @@ jobs:
         uses: taiki-e/install-action@cargo-hack
 
       - name: Check workspace (each feature combination)
-        run: cargo hack check --workspace --each-feature
+        run: cargo hack check --workspace --each-feature --exclude-all-features --exclude-no-default-features
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4

.github/workflows/quality.yml

@@ -66,4 +66,4 @@ jobs:
         uses: taiki-e/install-action@cargo-hack
 
       - name: Run clippy (each feature combination)
-        run: cargo hack clippy --workspace --each-feature
+        run: cargo hack clippy --workspace --each-feature --exclude-all-features --exclude-no-default-features

core/src/lib.rs

@@ -3,6 +3,12 @@ extern crate log;
 
 use librespot_protocol as protocol;
 
+#[cfg(all(feature = "native-tls", feature = "rustls-tls"))]
+compile_error!("Features 'native-tls' and 'rustls-tls' are mutually exclusive. Enable only one.");
+
+#[cfg(not(any(feature = "native-tls", feature = "rustls-tls")))]
+compile_error!("Either feature \"native-tls\" or \"rustls-tls\" must be enabled for this crate.");
+
 #[macro_use]
 mod component;