diff --git a/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/generators/protocol/ProtocolTestGenerator.kt b/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/generators/protocol/ProtocolTestGenerator.kt
index 310a05aee70..47ea9f56265 100644
--- a/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/generators/protocol/ProtocolTestGenerator.kt
+++ b/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/generators/protocol/ProtocolTestGenerator.kt
@@ -33,7 +33,9 @@ import software.amazon.smithy.rust.codegen.core.rustlang.rustBlock
 import software.amazon.smithy.rust.codegen.core.rustlang.rustTemplate
 import software.amazon.smithy.rust.codegen.core.rustlang.withBlock
 import software.amazon.smithy.rust.codegen.core.rustlang.writable
+import software.amazon.smithy.rust.codegen.core.smithy.RuntimeType
 import software.amazon.smithy.rust.codegen.core.smithy.generators.protocol.ProtocolSupport
+import software.amazon.smithy.rust.codegen.core.testutil.testDependenciesOnly
 import software.amazon.smithy.rust.codegen.core.util.dq
 import software.amazon.smithy.rust.codegen.core.util.getTrait
 import software.amazon.smithy.rust.codegen.core.util.hasTrait
@@ -173,8 +175,14 @@ class DefaultProtocolTestGenerator(
         }
         testModuleWriter.write("Test ID: ${testCase.id}")
         testModuleWriter.newlinePrefix = ""
+
         Attribute.TokioTest.render(testModuleWriter)
         Attribute.TracedTest.render(testModuleWriter)
+        // The `#[traced_test]` macro desugars to using `tracing`, so we need to depend on the latter explicitly in
+        // case the code rendered by the test does not make use of `tracing` at all.
+        val tracingDevDependency = testDependenciesOnly { addDependency(CargoDependency.Tracing.toDevDependency()) }
+        testModuleWriter.rustTemplate("#{TracingDevDependency:W}", "TracingDevDependency" to tracingDevDependency)
+
         val action = when (testCase) {
             is HttpResponseTestCase -> Action.Response
             is HttpRequestTestCase -> Action.Request
diff --git a/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/protocols/ClientProtocolLoader.kt b/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/protocols/ClientProtocolLoader.kt
index 3ab61ff94db..2af64bbad84 100644
--- a/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/protocols/ClientProtocolLoader.kt
+++ b/codegen-client/src/main/kotlin/software/amazon/smithy/rust/codegen/client/smithy/protocols/ClientProtocolLoader.kt
@@ -13,7 +13,7 @@ import software.amazon.smithy.aws.traits.protocols.Ec2QueryTrait
 import software.amazon.smithy.aws.traits.protocols.RestJson1Trait
 import software.amazon.smithy.aws.traits.protocols.RestXmlTrait
 import software.amazon.smithy.model.shapes.ServiceShape
-import software.amazon.smithy.protocols.traits.Rpcv2Trait
+import software.amazon.smithy.protocol.traits.Rpcv2CborTrait
 import software.amazon.smithy.rust.codegen.client.smithy.ClientCodegenContext
 import software.amazon.smithy.rust.codegen.client.smithy.generators.OperationGenerator
 import software.amazon.smithy.rust.codegen.core.smithy.CodegenContext
@@ -42,7 +42,7 @@ class ClientProtocolLoader(supportedProtocols: ProtocolMap<OperationGenerator, C
             Ec2QueryTrait.ID to ClientEc2QueryFactory(),
             RestJson1Trait.ID to ClientRestJsonFactory(),
             RestXmlTrait.ID to ClientRestXmlFactory(),
-            Rpcv2Trait.ID to ClientRpcV2Factory(),
+            Rpcv2CborTrait.ID to ClientRpcV2CborFactory(),
         )
         val Default = ClientProtocolLoader(DefaultProtocols)
     }
@@ -120,12 +120,11 @@ class ClientRestXmlFactory(
     override fun support(): ProtocolSupport = CLIENT_PROTOCOL_SUPPORT
 }
 
-// TODO(rpcv2): Implement `ClientRpcV2Factory`
-class ClientRpcV2Factory() : ProtocolGeneratorFactory<HttpBoundProtocolGenerator, ClientCodegenContext> {
+class ClientRpcV2CborFactory : ProtocolGeneratorFactory<OperationGenerator, ClientCodegenContext> {
     override fun protocol(codegenContext: ClientCodegenContext): Protocol = RpcV2(codegenContext)
 
-    override fun buildProtocolGenerator(codegenContext: ClientCodegenContext): HttpBoundProtocolGenerator =
-        HttpBoundProtocolGenerator(codegenContext, protocol(codegenContext))
+    override fun buildProtocolGenerator(codegenContext: ClientCodegenContext): OperationGenerator =
+        OperationGenerator(codegenContext, protocol(codegenContext))
 
     override fun support(): ProtocolSupport = CLIENT_PROTOCOL_SUPPORT
 }
diff --git a/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/AwsJson.kt b/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/AwsJson.kt
index e20667b8fb6..b44bdfb84dd 100644
--- a/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/AwsJson.kt
+++ b/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/AwsJson.kt
@@ -178,7 +178,7 @@ open class AwsJson(
             rustTemplate(
                 """
                 pub fn $fnName(payload: &#{Bytes}) -> Result<#{ErrorMetadataBuilder}, #{JsonError}> {
-                    #{json_errors}::parse_error_metadata(payload, &#{HeaderMap}::new())
+                    #{json_errors}::parse_error_metadata(payload, &#{Headers}::new())
                 }
                 """,
                 *errorScope,
diff --git a/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/RestJson.kt b/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/RestJson.kt
index 00d137c3f7c..c4e39806682 100644
--- a/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/RestJson.kt
+++ b/codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/protocols/RestJson.kt
@@ -134,7 +134,7 @@ open class RestJson(val codegenContext: CodegenContext) : Protocol {
             rustTemplate(
                 """
                 pub fn $fnName(payload: &#{Bytes}) -> Result<#{ErrorMetadataBuilder}, #{JsonError}> {
-                    #{json_errors}::parse_error_metadata(payload, &#{HeaderMap}::new())
+                    #{json_errors}::parse_error_metadata(payload, &#{Headers}::new())
                 }
                 """,
                 *errorScope,
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt
index e5b5340ec8b..c9ffa06cc44 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/protocol/ServerProtocolTestGenerator.kt
@@ -26,6 +26,7 @@ import software.amazon.smithy.protocoltests.traits.HttpResponseTestCase
 import software.amazon.smithy.protocoltests.traits.HttpResponseTestsTrait
 import software.amazon.smithy.rust.codegen.core.rustlang.Attribute
 import software.amazon.smithy.rust.codegen.core.rustlang.Attribute.Companion.allow
+import software.amazon.smithy.rust.codegen.core.rustlang.CargoDependency
 import software.amazon.smithy.rust.codegen.core.rustlang.RustMetadata
 import software.amazon.smithy.rust.codegen.core.rustlang.RustModule
 import software.amazon.smithy.rust.codegen.core.rustlang.RustReservedWords
@@ -42,6 +43,7 @@ import software.amazon.smithy.rust.codegen.core.smithy.CodegenContext
 import software.amazon.smithy.rust.codegen.core.smithy.RuntimeType
 import software.amazon.smithy.rust.codegen.core.smithy.generators.protocol.ProtocolSupport
 import software.amazon.smithy.rust.codegen.core.smithy.transformers.allErrors
+import software.amazon.smithy.rust.codegen.core.testutil.testDependenciesOnly
 import software.amazon.smithy.rust.codegen.core.util.dq
 import software.amazon.smithy.rust.codegen.core.util.getTrait
 import software.amazon.smithy.rust.codegen.core.util.hasStreamingMember
@@ -280,6 +282,10 @@ class ServerProtocolTestGenerator(
 
         Attribute.TokioTest.render(testModuleWriter)
         Attribute.TracedTest.render(testModuleWriter)
+        // The `#[traced_test]` macro desugars to using `tracing`, so we need to depend on the latter explicitly in
+        // case the code rendered by the test does not make use of `tracing` at all.
+        val tracingDevDependency = testDependenciesOnly { addDependency(CargoDependency.Tracing.toDevDependency()) }
+        testModuleWriter.rustTemplate("#{TracingDevDependency:W}", "TracingDevDependency" to tracingDevDependency)
 
         if (expectFail(testCase)) {
             testModuleWriter.writeWithNoFormatting("#[should_panic]")
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerProtocolLoader.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerProtocolLoader.kt
index 282483825c1..446f805851d 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerProtocolLoader.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerProtocolLoader.kt
@@ -21,7 +21,7 @@ import software.amazon.smithy.rust.codegen.core.util.isOutputEventStream
 import software.amazon.smithy.rust.codegen.server.smithy.ServerCodegenContext
 import software.amazon.smithy.rust.codegen.server.smithy.generators.protocol.ServerProtocolGenerator
 
-class StreamPayloadSerializerCustomization() : ServerHttpBoundProtocolCustomization() {
+class StreamPayloadSerializerCustomization : ServerHttpBoundProtocolCustomization() {
     override fun section(section: ServerHttpBoundProtocolSection): Writable =
         when (section) {
             is ServerHttpBoundProtocolSection.WrapStreamPayload ->
@@ -81,7 +81,7 @@ class ServerProtocolLoader(supportedProtocols: ProtocolMap<ServerProtocolGenerat
                         additionalServerHttpBoundProtocolCustomizations = listOf(StreamPayloadSerializerCustomization()),
                     ),
                 // TODO `StreamPayloadSerializerCustomization`
-                Rpcv2CborTrait.ID to ServerRpcV2Factory(),
+                Rpcv2CborTrait.ID to ServerRpcV2CborFactory(),
             )
     }
 }
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerRpcV2Factory.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerRpcV2CborFactory.kt
similarity index 89%
rename from codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerRpcV2Factory.kt
rename to codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerRpcV2CborFactory.kt
index c5abee8cde7..1dc2ce0679c 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerRpcV2Factory.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/protocols/ServerRpcV2CborFactory.kt
@@ -11,7 +11,7 @@ import software.amazon.smithy.rust.codegen.core.smithy.protocols.ProtocolGenerat
 import software.amazon.smithy.rust.codegen.server.smithy.ServerCodegenContext
 import software.amazon.smithy.rust.codegen.server.smithy.generators.protocol.ServerRpcV2Protocol
 
-class ServerRpcV2Factory : ProtocolGeneratorFactory<ServerHttpBoundProtocolGenerator, ServerCodegenContext> {
+class ServerRpcV2CborFactory : ProtocolGeneratorFactory<ServerHttpBoundProtocolGenerator, ServerCodegenContext> {
     override fun protocol(codegenContext: ServerCodegenContext): Protocol =
         ServerRpcV2Protocol(codegenContext)
 
@@ -19,7 +19,6 @@ class ServerRpcV2Factory : ProtocolGeneratorFactory<ServerHttpBoundProtocolGener
         ServerHttpBoundProtocolGenerator(codegenContext, ServerRpcV2Protocol(codegenContext))
 
     override fun support(): ProtocolSupport {
-        // TODO(): Implement `ServerRpcV2Factory.support`
         return ProtocolSupport(
             /* Client support */
             requestSerialization = false,