Kill idb on an exception. Otherwise in case of idb failure, it may not be able to run and install next application.

build-tools/src/main/kotlin/org/jetbrains/kotlin/ExecutorService.kt

@@ -328,6 +328,8 @@ private fun deviceLauncher(project: Project) = object : ExecutorService {
     private val deviceName = project.findProperty("device_name") as? String
 
     override fun execute(action: Action<in ExecSpec>): ExecResult? {
+        var result: ExecResult? = null
+        try {
             val udid = targetUDID()
             println("Found device UDID: $udid")
             install(udid, xcProject.resolve("build/KonanTestLauncher.ipa").toString())
@@ -339,7 +341,7 @@ private fun deviceLauncher(project: Project) = object : ExecutorService {
 
             var savedOut: OutputStream? = null
             val out = ByteArrayOutputStream()
-        val result = project.exec { execSpec: ExecSpec ->
+            result = project.exec { execSpec: ExecSpec ->
                 action.execute(execSpec)
                 execSpec.executable = "lldb"
                 execSpec.args = commands + "-b" + "-o" + "command script import ${pythonScript()}" +
@@ -371,7 +373,11 @@ private fun deviceLauncher(project: Project) = object : ExecutorService {
                     }
 
             uninstall(udid, bundleId)
+        } catch (exc: Exception) {
+            throw RuntimeException("iOS-device execution failed", exc)
+        } finally {
             kill()
+        }
         return result
     }