     }
 
     private func test(simulators: [FBSimulator]) throws {
+        var environment = testRun.environment
+        // Make Xcode output less noisy
+        environment["OS_ACTIVITY_MODE"] = "disable"
+
         let applicationLaunchConfiguration = FBApplicationLaunchConfiguration(
             application: application,
             arguments: testRun.arguments,
-            environment: testRun.environment,
+            environment: environment,
             options: []
         )
 

            .withTestsToRun(testRun.testsToRun.union(configuration.testsToRun))

        for simulator in simulators {
            let simulatorIdentifier = "\(simulator.deviceConfiguration.deviceName) \(simulator.osConfiguration.name)"
            let consoleReporter = ConsoleReporter(simulatorIdentifier: simulatorIdentifier)
            let junitReporter = FBTestManagerTestReporterJUnit.withOutputFileURL(configuration.output.appendingPathComponent("\(simulatorIdentifier)-junit.xml"))
            try simulator.interact
                .installApplication(application)
                .startTest(


        try boot(simulators: simulators)
        try test(simulators: simulators)
        try extractDiagnostics(simulators: simulators)

        ConsoleReporter.writeSummary()

