Don’t include the interop feature in Github Actions.

.github/workflows/ci.yml

@@ -20,5 +20,5 @@ jobs:
     - if: matrix.rust != 'nightly'
       run: cargo clippy --all-features -- -D warnings
     - run: cargo build --no-default-features --verbose
-    - run: cargo test --all-features --verbose
+    - run: cargo test --features="master resolv resolv-sync sign tsig validate" --verbose
 

Cargo.toml

@@ -27,6 +27,8 @@ smallvec       = { version = "1.2", optional = true }
 tokio          = { version = "0.2.13", optional = true, features = ["io-util", "macros", "tcp", "time", "udp"] }
 
 [features]
+# If you add a feature here, also add it to .github/workflows/ci.yml for the
+# cargo test run. Only interop must not be present.
 default     = ["std"]
 interop     = ["bytes", "ring"]
 master      = ["std", "bytes", "chrono"]