diff --git a/opentelemetry-jaeger/src/exporter/config/collector/http_client.rs b/opentelemetry-jaeger/src/exporter/config/collector/http_client.rs
index 02d5219580..69bafcc985 100644
--- a/opentelemetry-jaeger/src/exporter/config/collector/http_client.rs
+++ b/opentelemetry-jaeger/src/exporter/config/collector/http_client.rs
@@ -129,7 +129,7 @@ impl CollectorHttpClient {
 }
 
 #[cfg(test)]
-#[allow(dead_code)]
+#[cfg(feature = "rt-tokio")]
 pub(crate) mod test_http_client {
     use async_trait::async_trait;
     use bytes::Bytes;
diff --git a/opentelemetry/CHANGELOG.md b/opentelemetry/CHANGELOG.md
index 256a74a5fd..828c271c81 100644
--- a/opentelemetry/CHANGELOG.md
+++ b/opentelemetry/CHANGELOG.md
@@ -28,7 +28,7 @@
 
 Before:
 
-```
+```rust
 let logger = provider.versioned_logger(
     "my-logger-name",
     Some(env!("CARGO_PKG_VERSION")),
@@ -39,7 +39,7 @@ let logger = provider.versioned_logger(
 
 After:
 
-```
+```rust
 let logger = provider
     .logger_builder("my-logger-name")
     .with_version(env!("CARGO_PKG_VERSION"))
@@ -52,7 +52,7 @@ let logger = provider
 
 Before:
 
-```
+```rust
 let tracer = provider.versioned_tracer(
     "my-tracer-name",
     Some(env!("CARGO_PKG_VERSION")),
@@ -63,7 +63,7 @@ let tracer = provider.versioned_tracer(
 
 After:
 
-```
+```rust
 let tracer = provider
     .tracer_builder("my-tracer-name")
     .with_version(env!("CARGO_PKG_VERSION"))