diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 15c9d94..880a4c5 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -203,10 +203,11 @@ steps:
     steps:
       - label: ":swift: Swift: XCTest (test-collector-swift)"
         commands:
+          - git clone --branch swift-otel-executions --depth 1 https://github.com/buildkite/bktest .bktest
           - cd swift-xctest
           - swift package resolve
           # Run XCTest tests (which includes the BuildkiteTestCollector).
-          # The collector auto-loads via XCTest observation and uploads results
+          # The collector auto-loads via XCTest observation and exports results
           # when BUILDKITE_ANALYTICS_TOKEN is set.
           # Use --disable-swift-testing to only run XCTest (not Swift Testing).
           - swift test --disable-swift-testing
@@ -229,19 +230,26 @@ steps:
                 - BUILDKITE_ANALYTICS_DEBUG_ENABLED
 
       - label: ":swift: Swift: XCUITest (test-collector-swift)"
-        command: swift-xcuitest/bin/test
+        commands:
+          - git clone --branch swift-otel-executions --depth 1 https://github.com/buildkite/bktest .bktest
+          - bktec run
         agents:
           queue: macos
         artifact_paths:
           - swift-xcuitest/artifacts/SwiftXCUITest.xcresult/**/*
+          - swift-xcuitest/artifacts/xcodebuild.log
         env:
+          BUILDKITE_ANALYTICS_DEBUG_ENABLED: "true"
           BUILDKITE_ANALYTICS_TAGS: '{"test.framework.name":"xcuitest","language.name":"swift","custom.tag.from":"upload"}'
+          BUILDKITE_TESTS_OTLP_RELAY: "true"
         plugins:
-          - tests#v1.0.0:
+          - tests#v1.0.1:
               test-runner: custom
+              test-cmd: swift-xcuitest/bin/test
+              test-file-pattern: swift-xcuitest/ExampleAppUITests/**/*.swift
               suite-slug: test-engine-client-examples
               upload-results: false
-              install-client: false
+              client-version: v3.1.0-rc.1
 
   - group: ":android: Android"
     steps:
diff --git a/.gitignore b/.gitignore
index 24520cf..4f17ba4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 node_modules/
 tmp/
 bktec
+.bktest/
 
 # pytest
 *.egg*
diff --git a/swift-xctest/Package.resolved b/swift-xctest/Package.resolved
index 5aba5dd..0112e6d 100644
--- a/swift-xctest/Package.resolved
+++ b/swift-xctest/Package.resolved
@@ -1,14 +1,213 @@
 {
+  "originHash" : "160cfae0e90ff235481ca5f06cd3ead4f7d578a3db9d0f43104fc3e07a08a105",
   "pins" : [
     {
-      "identity" : "test-collector-swift",
+      "identity" : "grpc-swift",
       "kind" : "remoteSourceControl",
-      "location" : "https://github.com/buildkite/test-collector-swift",
+      "location" : "https://github.com/grpc/grpc-swift.git",
       "state" : {
-        "revision" : "dbb0f13987c3f9f54611aaf0ac0dc1085ebb5ea6",
-        "version" : "0.6.0"
+        "revision" : "a56a157218877ef3e9625f7e1f7b2cb7e46ead1b",
+        "version" : "1.26.1"
+      }
+    },
+    {
+      "identity" : "opentelemetry-swift",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/open-telemetry/opentelemetry-swift",
+      "state" : {
+        "revision" : "0b77b8e2b2121261562b1d304c638a004e1d2f19",
+        "version" : "2.2.0"
+      }
+    },
+    {
+      "identity" : "opentelemetry-swift-core",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/open-telemetry/opentelemetry-swift-core",
+      "state" : {
+        "revision" : "fd787757decabfa93319cc3c04f03a49e0cf40b6",
+        "version" : "2.2.0"
+      }
+    },
+    {
+      "identity" : "swift-algorithms",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-algorithms.git",
+      "state" : {
+        "revision" : "87e50f483c54e6efd60e885f7f5aa946cee68023",
+        "version" : "1.2.1"
+      }
+    },
+    {
+      "identity" : "swift-asn1",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-asn1.git",
+      "state" : {
+        "revision" : "f70225981241859eb4aa1a18a75531d26637c8cc",
+        "version" : "1.4.0"
+      }
+    },
+    {
+      "identity" : "swift-async-algorithms",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-async-algorithms.git",
+      "state" : {
+        "revision" : "3da39bbc4e687d4192af7c9cf4eab805745a0b9c",
+        "version" : "1.1.5"
+      }
+    },
+    {
+      "identity" : "swift-atomics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-atomics.git",
+      "state" : {
+        "revision" : "0442cb5a3f98ab802acb777929fdb446bda11a34",
+        "version" : "1.3.1"
+      }
+    },
+    {
+      "identity" : "swift-certificates",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-certificates.git",
+      "state" : {
+        "revision" : "c399f90e7bbe8874f6cbfda1d5f9023d1f5ce122",
+        "version" : "1.15.1"
+      }
+    },
+    {
+      "identity" : "swift-collections",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-collections.git",
+      "state" : {
+        "revision" : "8c0c0a8b49e080e54e5e328cc552821ff07cd341",
+        "version" : "1.2.1"
+      }
+    },
+    {
+      "identity" : "swift-crypto",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-crypto.git",
+      "state" : {
+        "revision" : "95ba0316a9b733e92bb6b071255ff46263bbe7dc",
+        "version" : "3.15.1"
+      }
+    },
+    {
+      "identity" : "swift-http-structured-headers",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-http-structured-headers.git",
+      "state" : {
+        "revision" : "1625f271afb04375bf48737a5572613248d0e7a0",
+        "version" : "1.4.0"
+      }
+    },
+    {
+      "identity" : "swift-http-types",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-http-types.git",
+      "state" : {
+        "revision" : "45eb0224913ea070ec4fba17291b9e7ecf4749ca",
+        "version" : "1.5.1"
+      }
+    },
+    {
+      "identity" : "swift-log",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-log.git",
+      "state" : {
+        "revision" : "ce592ae52f982c847a4efc0dd881cc9eb32d29f2",
+        "version" : "1.6.4"
+      }
+    },
+    {
+      "identity" : "swift-metrics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-metrics",
+      "state" : {
+        "revision" : "0743a9364382629da3bf5677b46a2c4b1ce5d2a6",
+        "version" : "2.7.1"
+      }
+    },
+    {
+      "identity" : "swift-nio",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio.git",
+      "state" : {
+        "revision" : "a18bddb0acf7a40d982b2f128ce73ce4ee31f352",
+        "version" : "2.86.2"
+      }
+    },
+    {
+      "identity" : "swift-nio-extras",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-extras.git",
+      "state" : {
+        "revision" : "a55c3dd3a81d035af8a20ce5718889c0dcab073d",
+        "version" : "1.29.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-http2",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-http2.git",
+      "state" : {
+        "revision" : "5e9e99ec96c53bc2c18ddd10c1e25a3cd97c55e5",
+        "version" : "1.38.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-ssl",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-ssl.git",
+      "state" : {
+        "revision" : "b2b043a8810ab6d51b3ff4df17f057d87ef1ec7c",
+        "version" : "2.34.1"
+      }
+    },
+    {
+      "identity" : "swift-nio-transport-services",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-transport-services.git",
+      "state" : {
+        "revision" : "df6c28355051c72c884574a6c858bc54f7311ff9",
+        "version" : "1.25.2"
+      }
+    },
+    {
+      "identity" : "swift-numerics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-numerics.git",
+      "state" : {
+        "revision" : "0c0290ff6b24942dadb83a929ffaaa1481df04a2",
+        "version" : "1.1.1"
+      }
+    },
+    {
+      "identity" : "swift-protobuf",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-protobuf.git",
+      "state" : {
+        "revision" : "c5ab62237f21cad094812719a1bbe29443407c5f",
+        "version" : "1.34.1"
+      }
+    },
+    {
+      "identity" : "swift-service-lifecycle",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/swift-server/swift-service-lifecycle.git",
+      "state" : {
+        "revision" : "1de37290c0ab3c5a96028e0f02911b672fd42348",
+        "version" : "2.9.1"
+      }
+    },
+    {
+      "identity" : "swift-system",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-system.git",
+      "state" : {
+        "revision" : "0b30161977799fd949f7f6848586b82ff6764f73",
+        "version" : "1.6.6"
       }
     }
   ],
-  "version" : 2
+  "version" : 3
 }
diff --git a/swift-xctest/Package.swift b/swift-xctest/Package.swift
index bd3cf9c..4e5b04e 100644
--- a/swift-xctest/Package.swift
+++ b/swift-xctest/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version: 5.9
+// swift-tools-version: 5.10
 import PackageDescription
 
 let package = Package(
@@ -10,7 +10,7 @@ let package = Package(
         .library(name: "ExampleLib", targets: ["ExampleLib"])
     ],
     dependencies: [
-        .package(url: "https://github.com/buildkite/test-collector-swift", from: "0.6.0")
+        .package(path: "../.bktest/test-collector-swift")
     ],
     targets: [
         .target(
diff --git a/swift-xcuitest/ExampleApp/ExampleApp.swift b/swift-xcuitest/ExampleApp/ExampleApp.swift
index 9d0a04a..d8dc18f 100644
--- a/swift-xcuitest/ExampleApp/ExampleApp.swift
+++ b/swift-xcuitest/ExampleApp/ExampleApp.swift
@@ -1,12 +1,44 @@
+import Foundation
 import SwiftUI
 
 @main
 struct ExampleApp: App {
     var body: some Scene {
         WindowGroup {
+            ContentView()
+        }
+    }
+}
+
+private struct ContentView: View {
+    private let runID: String
+    @State private var runnerCrashRecorded: Bool
+
+    init() {
+        let runID = ProcessInfo.processInfo.environment["XCUITEST_RUN_ID"] ?? "local"
+        self.runID = runID
+        self._runnerCrashRecorded = State(
+            initialValue: UserDefaults.standard.string(forKey: "runner-crash-run-id") == runID
+        )
+    }
+
+    var body: some View {
+        VStack {
             Text("Swift XCUITest example")
                 .accessibilityIdentifier("status")
-                .padding()
+
+            if runnerCrashRecorded {
+                Text("Runner crash recorded")
+                    .accessibilityIdentifier("runner-crash-recorded")
+            } else {
+                Button("Record runner crash") {
+                    UserDefaults.standard.set(runID, forKey: "runner-crash-run-id")
+                    UserDefaults.standard.synchronize()
+                    runnerCrashRecorded = true
+                }
+                .accessibilityIdentifier("record-runner-crash")
+            }
         }
+        .padding()
     }
 }
diff --git a/swift-xcuitest/ExampleAppUITests/ExampleAppUITests.swift b/swift-xcuitest/ExampleAppUITests/ExampleAppUITests.swift
index 500ebcf..270732a 100644
--- a/swift-xcuitest/ExampleAppUITests/ExampleAppUITests.swift
+++ b/swift-xcuitest/ExampleAppUITests/ExampleAppUITests.swift
@@ -1,4 +1,5 @@
 import Core
+import Darwin
 import XCTest
 
 final class ExampleAppUITests: XCTestCase {
@@ -7,8 +8,7 @@ final class ExampleAppUITests: XCTestCase {
     }
 
     func test01AppLaunches() {
-        let app = XCUIApplication()
-        app.launch()
+        let app = launchApp()
 
         XCTAssertTrue(app.staticTexts["status"].waitForExistence(timeout: 5))
     }
@@ -16,9 +16,44 @@ final class ExampleAppUITests: XCTestCase {
     func test02ExecutionTag() {
         tagExecution("custom.tag.from", "execution")
 
-        let app = XCUIApplication()
-        app.launch()
+        let app = launchApp()
 
         XCTAssertEqual(app.staticTexts["status"].label, "Swift XCUITest example")
     }
+
+    func test03RunnerCrashesOnce() {
+        let app = launchApp()
+
+        if app.buttons["record-runner-crash"].waitForExistence(timeout: 2) {
+            app.buttons["record-runner-crash"].tap()
+            XCTAssertTrue(app.staticTexts["runner-crash-recorded"].waitForExistence(timeout: 2))
+
+            _ = kill(getpid(), SIGKILL)
+            XCTFail("The runner process should have terminated")
+        }
+
+        XCTAssertTrue(app.staticTexts["runner-crash-recorded"].waitForExistence(timeout: 2))
+    }
+
+    func test04RunsInReplacementRunner() {
+        let app = launchApp()
+
+        XCTAssertTrue(app.staticTexts["runner-crash-recorded"].waitForExistence(timeout: 5))
+    }
+
+    func test05ExecutionTagAfterRestart() {
+        tagExecution("runner.replacement", "true")
+
+        let app = launchApp()
+        XCTAssertTrue(app.staticTexts["status"].waitForExistence(timeout: 5))
+        XCTAssertEqual(app.staticTexts["status"].label, "Swift XCUITest example")
+    }
+
+    private func launchApp() -> XCUIApplication {
+        let app = XCUIApplication()
+        let runID = ProcessInfo.processInfo.environment["XCUITEST_RUN_ID"] ?? "local"
+        app.launchEnvironment["XCUITEST_RUN_ID"] = runID
+        app.launch()
+        return app
+    }
 }
diff --git a/swift-xcuitest/README.md b/swift-xcuitest/README.md
index be7ffb4..a714882 100644
--- a/swift-xcuitest/README.md
+++ b/swift-xcuitest/README.md
@@ -1,9 +1,26 @@
 # Swift XCUITest example
 
-This example runs passing UI tests against a minimal iOS app and uploads the
-results with [`test-collector-swift`](https://github.com/buildkite/test-collector-swift).
-It uses a shared scheme, a lexical test plan, and an explicit `.xcresult`
-bundle so the same command works locally and on a macOS Buildkite agent.
+This example verifies OpenTelemetry execution delivery when XCTest replaces an
+XCUITest runner. Two tests finish before a third test terminates the runner.
+Xcode continues the remaining tests in a replacement process and keeps all
+five tests in the `.xcresult`: four passes and the deliberately killed active
+test. Each of the four tests that receives an XCTest completion callback is
+handed to the bktec OTLP relay before its runner can exit.
+
+The verification script asserts the expected runner crash and replacement,
+then checks that all four completed tests were accepted over OTLP. The killed
+test cannot be emitted by an in-process collector because `SIGKILL` prevents
+XCTest's completion callback; recovering that execution would require durable
+start-state reconciliation outside the runner.
+
+This branch uses the Swift collector from the `swift-otel-executions` branch of
+[`buildkite/bktest`](https://github.com/buildkite/bktest). Check it out before
+running locally:
+
+```sh
+git clone --branch swift-otel-executions --depth 1 \
+  https://github.com/buildkite/bktest ../.bktest
+```
 
 Run it with:
 
diff --git a/swift-xcuitest/SwiftXCUITest.xcodeproj/project.pbxproj b/swift-xcuitest/SwiftXCUITest.xcodeproj/project.pbxproj
index 65a3cd5..8abff26 100644
--- a/swift-xcuitest/SwiftXCUITest.xcodeproj/project.pbxproj
+++ b/swift-xcuitest/SwiftXCUITest.xcodeproj/project.pbxproj
@@ -145,7 +145,7 @@
 			mainGroup = 15771E3CC944F418353D1657;
 			minimizedProjectReferenceProxies = 0;
 			packageReferences = (
-				0F260402842AAB649211B9B2 /* XCRemoteSwiftPackageReference "test-collector-swift" */,
+				0F260402842AAB649211B9B2 /* XCLocalSwiftPackageReference "../.bktest/test-collector-swift" */,
 			);
 			preferredProjectObjectVersion = 100;
 			productRefGroup = 55AE842CDC491C8FB4A68112 /* Products */;
@@ -415,21 +415,17 @@
 		};
 /* End XCConfigurationList section */
 
-/* Begin XCRemoteSwiftPackageReference section */
-		0F260402842AAB649211B9B2 /* XCRemoteSwiftPackageReference "test-collector-swift" */ = {
-			isa = XCRemoteSwiftPackageReference;
-			repositoryURL = "https://github.com/buildkite/test-collector-swift";
-			requirement = {
-				kind = upToNextMajorVersion;
-				minimumVersion = 0.6.0;
-			};
+/* Begin XCLocalSwiftPackageReference section */
+		0F260402842AAB649211B9B2 /* XCLocalSwiftPackageReference "../.bktest/test-collector-swift" */ = {
+			isa = XCLocalSwiftPackageReference;
+			relativePath = "../.bktest/test-collector-swift";
 		};
-/* End XCRemoteSwiftPackageReference section */
+/* End XCLocalSwiftPackageReference section */
 
 /* Begin XCSwiftPackageProductDependency section */
 		DB07F6513929E915435499BA /* BuildkiteTestCollector */ = {
 			isa = XCSwiftPackageProductDependency;
-			package = 0F260402842AAB649211B9B2 /* XCRemoteSwiftPackageReference "test-collector-swift" */;
+			package = 0F260402842AAB649211B9B2 /* XCLocalSwiftPackageReference "../.bktest/test-collector-swift" */;
 			productName = BuildkiteTestCollector;
 		};
 /* End XCSwiftPackageProductDependency section */
diff --git a/swift-xcuitest/SwiftXCUITest.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved b/swift-xcuitest/SwiftXCUITest.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
index cef9935..7cb84d3 100644
--- a/swift-xcuitest/SwiftXCUITest.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
+++ b/swift-xcuitest/SwiftXCUITest.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
@@ -1,13 +1,229 @@
 {
-  "originHash" : "f28a54e288718485642adbe7b780a05abf05f95f0f435b3f87b6d3684b95d268",
+  "originHash" : "70638e11aba3a1472dfd0d75666b7caef58756d280301136e8d429ecf34ce1b3",
   "pins" : [
     {
-      "identity" : "test-collector-swift",
+      "identity" : "grpc-swift",
       "kind" : "remoteSourceControl",
-      "location" : "https://github.com/buildkite/test-collector-swift",
+      "location" : "https://github.com/grpc/grpc-swift.git",
       "state" : {
-        "revision" : "dbb0f13987c3f9f54611aaf0ac0dc1085ebb5ea6",
-        "version" : "0.6.0"
+        "revision" : "a56a157218877ef3e9625f7e1f7b2cb7e46ead1b",
+        "version" : "1.26.1"
+      }
+    },
+    {
+      "identity" : "opentelemetry-swift",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/open-telemetry/opentelemetry-swift",
+      "state" : {
+        "revision" : "0b77b8e2b2121261562b1d304c638a004e1d2f19",
+        "version" : "2.2.0"
+      }
+    },
+    {
+      "identity" : "opentelemetry-swift-core",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/open-telemetry/opentelemetry-swift-core",
+      "state" : {
+        "revision" : "fd787757decabfa93319cc3c04f03a49e0cf40b6",
+        "version" : "2.2.0"
+      }
+    },
+    {
+      "identity" : "opentracing-objc",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/undefinedlabs/opentracing-objc",
+      "state" : {
+        "revision" : "18c1a35ca966236cee0c5a714a51a73ff33384c1",
+        "version" : "0.5.2"
+      }
+    },
+    {
+      "identity" : "swift-algorithms",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-algorithms.git",
+      "state" : {
+        "revision" : "87e50f483c54e6efd60e885f7f5aa946cee68023",
+        "version" : "1.2.1"
+      }
+    },
+    {
+      "identity" : "swift-asn1",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-asn1.git",
+      "state" : {
+        "revision" : "9f542610331815e29cc3821d3b6f488db8715517",
+        "version" : "1.6.0"
+      }
+    },
+    {
+      "identity" : "swift-async-algorithms",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-async-algorithms.git",
+      "state" : {
+        "revision" : "3da39bbc4e687d4192af7c9cf4eab805745a0b9c",
+        "version" : "1.1.5"
+      }
+    },
+    {
+      "identity" : "swift-atomics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-atomics.git",
+      "state" : {
+        "revision" : "0442cb5a3f98ab802acb777929fdb446bda11a34",
+        "version" : "1.3.1"
+      }
+    },
+    {
+      "identity" : "swift-certificates",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-certificates.git",
+      "state" : {
+        "revision" : "24ccdeeeed4dfaae7955fcac9dbf5489ed4f1a25",
+        "version" : "1.18.0"
+      }
+    },
+    {
+      "identity" : "swift-collections",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-collections.git",
+      "state" : {
+        "revision" : "a0cb0954ecb21e4e31b0070e6ed5674e8556685a",
+        "version" : "1.6.0"
+      }
+    },
+    {
+      "identity" : "swift-crypto",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-crypto.git",
+      "state" : {
+        "revision" : "bb4ba815dab96d4edc1e0b86d7b9acf9ff973a84",
+        "version" : "4.3.1"
+      }
+    },
+    {
+      "identity" : "swift-http-structured-headers",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-http-structured-headers.git",
+      "state" : {
+        "revision" : "76d7627bd88b47bf5a0f8497dd244885960dde0b",
+        "version" : "1.6.0"
+      }
+    },
+    {
+      "identity" : "swift-http-types",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-http-types.git",
+      "state" : {
+        "revision" : "45eb0224913ea070ec4fba17291b9e7ecf4749ca",
+        "version" : "1.5.1"
+      }
+    },
+    {
+      "identity" : "swift-log",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-log.git",
+      "state" : {
+        "revision" : "8c0f217f01000dd30f60d6e536569ad4e74291f9",
+        "version" : "1.11.0"
+      }
+    },
+    {
+      "identity" : "swift-metrics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-metrics.git",
+      "state" : {
+        "revision" : "0743a9364382629da3bf5677b46a2c4b1ce5d2a6",
+        "version" : "2.7.1"
+      }
+    },
+    {
+      "identity" : "swift-nio",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio.git",
+      "state" : {
+        "revision" : "558f24a4647193b5a0e2104031b71c55d31ff83a",
+        "version" : "2.97.1"
+      }
+    },
+    {
+      "identity" : "swift-nio-extras",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-extras.git",
+      "state" : {
+        "revision" : "abcf5312eb8ed2fb11916078aef7c46b06f20813",
+        "version" : "1.33.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-http2",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-http2.git",
+      "state" : {
+        "revision" : "6d8d596f0a9bfebb925733003731fe2d749b7e02",
+        "version" : "1.42.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-ssl",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-ssl.git",
+      "state" : {
+        "revision" : "df9c3406028e3297246e6e7081977a167318b692",
+        "version" : "2.36.1"
+      }
+    },
+    {
+      "identity" : "swift-nio-transport-services",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-transport-services.git",
+      "state" : {
+        "revision" : "60c3e187154421171721c1a38e800b390680fb5d",
+        "version" : "1.26.0"
+      }
+    },
+    {
+      "identity" : "swift-numerics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-numerics.git",
+      "state" : {
+        "revision" : "0c0290ff6b24942dadb83a929ffaaa1481df04a2",
+        "version" : "1.1.1"
+      }
+    },
+    {
+      "identity" : "swift-protobuf",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-protobuf.git",
+      "state" : {
+        "revision" : "81558271e243f8f47dfe8e9fdd55f3c2b5413f68",
+        "version" : "1.37.0"
+      }
+    },
+    {
+      "identity" : "swift-service-lifecycle",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/swift-server/swift-service-lifecycle.git",
+      "state" : {
+        "revision" : "9829955b385e5bb88128b73f1b8389e9b9c3191a",
+        "version" : "2.11.0"
+      }
+    },
+    {
+      "identity" : "swift-system",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-system.git",
+      "state" : {
+        "revision" : "0b30161977799fd949f7f6848586b82ff6764f73",
+        "version" : "1.6.6"
+      }
+    },
+    {
+      "identity" : "thrift-swift",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/undefinedlabs/Thrift-Swift",
+      "state" : {
+        "revision" : "18ff09e6b30e589ed38f90a1af23e193b8ecef8e",
+        "version" : "1.1.2"
       }
     }
   ],
diff --git a/swift-xcuitest/bin/test b/swift-xcuitest/bin/test
index c33db23..fcb4bcb 100755
--- a/swift-xcuitest/bin/test
+++ b/swift-xcuitest/bin/test
@@ -5,9 +5,10 @@ set -euo pipefail
 root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 artifacts_dir="${XCUITEST_ARTIFACTS_DIR:-$root/artifacts}"
 result_bundle="$artifacts_dir/SwiftXCUITest.xcresult"
+test_log="$artifacts_dir/xcodebuild.log"
 
 for name in \
-  BUILDKITE_ANALYTICS_BASE_URL \
+  BUILDKITE_ANALYTICS_KEY \
   BUILDKITE_ANALYTICS_BRANCH \
   BUILDKITE_ANALYTICS_DEBUG_ENABLED \
   BUILDKITE_ANALYTICS_ENABLED \
@@ -17,6 +18,7 @@ for name in \
   BUILDKITE_ANALYTICS_JOB_ID \
   BUILDKITE_ANALYTICS_MESSAGE \
   BUILDKITE_ANALYTICS_NUMBER \
+  BUILDKITE_ANALYTICS_OTLP_ENDPOINT \
   BUILDKITE_ANALYTICS_SHA \
   BUILDKITE_ANALYTICS_TAGS \
   BUILDKITE_ANALYTICS_TOKEN \
@@ -27,13 +29,27 @@ for name in \
   BUILDKITE_BUILD_URL \
   BUILDKITE_COMMIT \
   BUILDKITE_JOB_ID \
-  BUILDKITE_MESSAGE
+  BUILDKITE_MESSAGE \
+  BUILDKITE_ORGANIZATION_SLUG \
+  BUILDKITE_STEP_ID \
+  BUILDKITE_TAG \
+  BUILDKITE_TEST_ENGINE_SUITE_SLUG \
+  BUILDKITE_TESTS_OTLP_TOKEN \
+  OTEL_EXPORTER_OTLP_TRACES_ENDPOINT \
+  OTEL_EXPORTER_OTLP_TRACES_HEADERS \
+  OTEL_EXPORTER_OTLP_TRACES_PROTOCOL \
+  OTEL_RESOURCE_ATTRIBUTES \
+  TRACEPARENT \
+  TRACESTATE
 do
   if [[ -n "${!name:-}" ]]; then
     export "TEST_RUNNER_${name}=${!name}"
   fi
 done
 
+run_id="${XCUITEST_RUN_ID:-${BUILDKITE_BUILD_ID:-local}-${BUILDKITE_JOB_ID:-$(date +%s)}}"
+export "TEST_RUNNER_XCUITEST_RUN_ID=$run_id"
+
 destination="${XCUITEST_DESTINATION:-}"
 if [[ -z "$destination" ]]; then
   device_id="$({
@@ -57,6 +73,7 @@ xcodebuild \
   -scheme SwiftXCUITest \
   -resolvePackageDependencies
 
+set +e
 xcodebuild \
   -project "$root/SwiftXCUITest.xcodeproj" \
   -scheme SwiftXCUITest \
@@ -64,4 +81,17 @@ xcodebuild \
   -destination "$destination" \
   -derivedDataPath "$artifacts_dir/DerivedData" \
   -resultBundlePath "$result_bundle" \
-  test
+  -retry-tests-on-failure \
+  -test-iterations 2 \
+  test 2>&1 | tee "$test_log"
+xcodebuild_status="${PIPESTATUS[0]}"
+set -e
+
+verification_status=0
+"$root/bin/verify-results" "$result_bundle" "$test_log" || verification_status="$?"
+
+if [[ "$xcodebuild_status" -ne 0 ]]; then
+  echo "xcodebuild exited $xcodebuild_status after the expected runner termination"
+fi
+
+exit "$verification_status"
diff --git a/swift-xcuitest/bin/verify-results b/swift-xcuitest/bin/verify-results
new file mode 100755
index 0000000..c3f93cf
--- /dev/null
+++ b/swift-xcuitest/bin/verify-results
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+set -euo pipefail
+
+result_bundle="${1:?usage: verify-results RESULT_BUNDLE XCODEBUILD_LOG}"
+test_log="${2:?usage: verify-results RESULT_BUNDLE XCODEBUILD_LOG}"
+expected_result_count=5
+expected_completed_count=4
+
+if summary="$(xcrun xcresulttool get test-results summary --path "$result_bundle" 2>/dev/null)"; then
+  result_count="$(plutil -extract totalTestCount raw -o - - <<< "$summary")"
+  passed_count="$(plutil -extract passedTests raw -o - - <<< "$summary")"
+  failed_count="$(plutil -extract failedTests raw -o - - <<< "$summary")"
+  failure_test="$(plutil -extract testFailures.0.testIdentifierString raw -o - - <<< "$summary")"
+  failure_text="$(plutil -extract testFailures.0.failureText raw -o - - <<< "$summary")"
+else
+  if ! summary="$(xcrun xcresulttool get object --legacy --path "$result_bundle" --format json 2>/dev/null)"; then
+    summary="$(xcrun xcresulttool get --path "$result_bundle" --format json)"
+  fi
+
+  action_result="actions._values.0.actionResult"
+  result_count="$(plutil -extract "$action_result.metrics.testsCount._value" raw -o - - <<< "$summary")"
+  failed_count="$(plutil -extract "$action_result.metrics.testsFailedCount._value" raw -o - - <<< "$summary")"
+  passed_count="$((result_count - failed_count))"
+  failure_test="$(plutil -extract "$action_result.issues.testFailureSummaries._values.0.testCaseName._value" raw -o - - <<< "$summary")"
+  failure_text="$(plutil -extract "$action_result.issues.testFailureSummaries._values.0.message._value" raw -o - - <<< "$summary")"
+fi
+exported_count="$(awk '
+  {
+    line = $0
+    while (match(line, /Exported OpenTelemetry test execution: test[^[:space:]]*/)) {
+      names[substr(line, RSTART, RLENGTH)] = 1
+      line = substr(line, RSTART + RLENGTH)
+    }
+  }
+  END {
+    for (name in names) count++
+    print count + 0
+  }
+' "$test_log")"
+
+echo "Expected .xcresult tests: $expected_result_count"
+echo ".xcresult tests: $result_count ($passed_count passed, $failed_count runner crash)"
+echo "Expected completed executions: $expected_completed_count"
+echo "Collector unique executions accepted over OTLP: $exported_count"
+
+status=0
+
+if [[ "$result_count" -ne "$expected_result_count" || "$passed_count" -ne 4 || "$failed_count" -ne 1 ]]; then
+  echo "Expected .xcresult to retain four passes and the deliberate runner crash" >&2
+  status=1
+fi
+
+if [[ "$failure_test" != "ExampleAppUITests/test03RunnerCrashesOnce()" \
+  && "$failure_test" != "ExampleAppUITests.test03RunnerCrashesOnce()" \
+  || "$failure_text" != "Test crashed with signal kill." ]]
+then
+  echo "Expected test03RunnerCrashesOnce to be the only failed test" >&2
+  status=1
+fi
+
+if ! grep -Fq "Restarting after unexpected exit, crash, or test timeout" "$test_log"; then
+  echo "XCTest did not replace the terminated runner" >&2
+  status=1
+fi
+
+for name in \
+  test01AppLaunches \
+  test02ExecutionTag \
+  test04RunsInReplacementRunner \
+  test05ExecutionTagAfterRestart
+do
+  if ! grep -Fq "Exported OpenTelemetry test execution: $name" "$test_log"; then
+    echo "Collector did not export completed execution $name" >&2
+    status=1
+  fi
+done
+
+if [[ "$exported_count" -ne "$expected_completed_count" ]]; then
+  echo "Collector did not hand every completed execution to the OTLP endpoint" >&2
+  status=1
+fi
+
+exit "$status"