Ensure task build directory always exist

#KT-14253 fixed

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kapt2IT.kt

@@ -74,7 +74,7 @@ class Kapt2IT: BaseGradleIT() {
         val project = Project("simple", GRADLE_VERSION, directoryPrefix = "kapt2")
         val classesDir = File(project.projectDir, "build/classes")
 
-        project.build("build", options = options) {
+        project.build("clean", "build", options = options) {
             assertSuccessful()
             assertKaptSuccessful()
             assertContains(":compileKotlin")

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -120,8 +120,8 @@ open class KotlinCompile : AbstractKotlinCompile<K2JVMCompilerArguments>(), Kotl
 
     private val sourceRoots = HashSet<File>()
 
-    // lazy because name is probably not available when constructor is called
-    internal val taskBuildDirectory: File by lazy { File(File(project.buildDir, KOTLIN_BUILD_DIR_NAME), name).apply { mkdirs() } }
+    internal val taskBuildDirectory: File
+        get() = File(File(project.buildDir, KOTLIN_BUILD_DIR_NAME), name).apply { mkdirs() }
     private val cacheDirectory: File by lazy { File(taskBuildDirectory, CACHES_DIR_NAME) }
     private val dirtySourcesSinceLastTimeFile: File by lazy { File(taskBuildDirectory, DIRTY_SOURCES_FILE_NAME) }
     private val lastBuildInfoFile: File by lazy { File(taskBuildDirectory, LAST_BUILD_INFO_FILE_NAME) }