diff --git a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/rustlang/RustTypes.kt b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/rustlang/RustTypes.kt
index 8201363f00a1e2bd1332f5b52763948b7804f4ce..45a630be9387cd901400d22055cc86c8fc732baf 100644
--- a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/rustlang/RustTypes.kt
+++ b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/rustlang/RustTypes.kt
@@ -68,8 +68,8 @@ sealed class RustType {
         override val namespace = Namespace
 
         companion object {
-            const val Type = "BTreeSet"
-            const val Namespace = "std::collections"
+            const val Type = "Vec"
+            const val Namespace = "std::vec"
             val RuntimeType = RuntimeType(name = Type, namespace = Namespace, dependency = null)
         }
     }
diff --git a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/HttpProtocolTestGenerator.kt b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/HttpProtocolTestGenerator.kt
index 13b64e404b0fa7c9bbe7ce9c7476ec50be302243..e9d1dca8171fe90b3831cc96af76976818329c8b 100644
--- a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/HttpProtocolTestGenerator.kt
+++ b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/HttpProtocolTestGenerator.kt
@@ -422,11 +422,6 @@ class HttpProtocolTestGenerator(
 
         // These tests are not even attempted to be compiled, either because they will not compile
         // or because they are flaky
-        private val DisableTests = setOf(
-            // This test is flaky because of set ordering serialization https://github.com/awslabs/smithy-rs/issues/37
-            "AwsJson11Enums",
-            "RestJsonJsonEnums",
-            "RestJsonLists"
-        )
+        private val DisableTests = setOf<String>()
     }
 }
diff --git a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/Instantiator.kt b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/Instantiator.kt
index 87abb00a73a6de4d32be7a9668e643f7dd0ccfaa..08596166680e880c087fa372ac2272c808cd2c26 100644
--- a/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/Instantiator.kt
+++ b/codegen/src/main/kotlin/software/amazon/smithy/rust/codegen/smithy/generators/Instantiator.kt
@@ -162,23 +162,7 @@ class Instantiator(
     }
 
     private fun renderSet(writer: RustWriter, shape: SetShape, data: ArrayNode, ctx: Ctx) {
-        if (symbolProvider.toSymbol(shape).rustType() is RustType.HashSet) {
-            if (!data.isEmpty) {
-                writer.rustBlock("") {
-                    write("let mut ret = #T::new();", RustType.HashSet.RuntimeType)
-                    data.forEach { v ->
-                        withBlock("ret.insert(", ");") {
-                            renderMember(this, shape.member, v, ctx)
-                        }
-                    }
-                    write("ret")
-                }
-            } else {
-                writer.write("#T::new()", RustType.HashSet.RuntimeType)
-            }
-        } else {
-            renderList(writer, shape, data, ctx)
-        }
+        renderList(writer, shape, data, ctx)
     }
 
     /**