Fix BuildCacheIT and BuildCacheRelocationIT

* Adjust the log checks for newer Gradle versions
* Use AGP 3.6.0 and Gradle 5.6.1 as the older version

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

@@ -34,7 +34,7 @@ class BuildCacheIT : BaseGradleIT() {
 
         build("assemble") {
             assertSuccessful()
-            assertContains("Packing task ':compileKotlin'")
+            assertTaskPackedToCache(":compileKotlin")
         }
 
         build("clean", "assemble", "-Dkotlin.caching.enabled=false") {
@@ -49,7 +49,7 @@ class BuildCacheIT : BaseGradleIT() {
 
         build("assemble") {
             assertSuccessful()
-            assertContains("Packing task ':compileKotlin'")
+            assertTaskPackedToCache(":compileKotlin")
         }
         build("clean", "assemble") {
             assertSuccessful()
@@ -65,7 +65,7 @@ class BuildCacheIT : BaseGradleIT() {
         build("assemble") {
             assertSuccessful()
             // Should store the output into the cache:
-            assertContains("Packing task ':compileKotlin'")
+            assertTaskPackedToCache(":compileKotlin")
         }
 
         val sourceFile = File(projectDir, "src/main/kotlin/helloWorld.kt")
@@ -75,7 +75,7 @@ class BuildCacheIT : BaseGradleIT() {
 
         build("assemble") {
             assertSuccessful()
-            assertContains("Packing task ':compileKotlin'")
+            assertTaskPackedToCache(":compileKotlin")
         }
 
         sourceFile.writeText(originalSource)
@@ -102,7 +102,7 @@ class BuildCacheIT : BaseGradleIT() {
         // First build, should be stored into the build cache:
         build("assemble") {
             assertSuccessful()
-            assertContains("Packing task ':compileKotlin'")
+            assertTaskPackedToCache(":compileKotlin")
         }
 
         // A cache hit:
@@ -134,8 +134,8 @@ class BuildCacheIT : BaseGradleIT() {
             )
             build(options = options, params = *arrayOf("clean", ":app:build")) {
                 assertSuccessful()
-                assertContains("Packing task ':app:kaptGenerateStubsKotlin'")
-                assertContains("Packing task ':app:kaptKotlin'")
+                assertTaskPackedToCache(":app:kaptGenerateStubsKotlin")
+                assertTaskPackedToCache(":app:kaptKotlin")
             }
 
             // copy project to a new location
@@ -157,4 +157,10 @@ fun BaseGradleIT.Project.prepareLocalBuildCache(directory: File = File(projectDi
     }
     File(projectDir, "settings.gradle").appendText("\nbuildCache.local.directory = '${directory.absolutePath.replace("\\", "/")}'")
     return directory
+}
+
+internal fun BaseGradleIT.CompiledProject.assertTaskPackedToCache(taskPath: String) {
+    with(project.testCase) {
+        assertContainsRegex(Regex("(?:Packing|Stored cache entry for) task '${Regex.escape(taskPath)}'"))
+    }
 }

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

@@ -28,10 +28,13 @@ import kotlin.test.assertEquals
 @RunWith(Parameterized::class)
 class BuildCacheRelocationIT : BaseGradleIT() {
 
+    override val defaultGradleVersion: GradleVersionRequired
+        get() = GradleVersionRequired.AtLeast("5.6.1")
+
     override fun defaultBuildOptions(): BuildOptions =
         super.defaultBuildOptions().copy(
             withBuildCache = true,
-            androidGradlePluginVersion = AGPVersion.v3_2_0,
+            androidGradlePluginVersion = AGPVersion.v3_6_0,
             androidHome = KotlinTestUtils.findAndroidSdk()
         )
 
@@ -62,7 +65,7 @@ class BuildCacheRelocationIT : BaseGradleIT() {
             firstProject.build(*testCase.taskToExecute) {
                 assertSuccessful()
                 firstOutputHashes = hashOutputFiles(outputRoots)
-                cacheableTaskNames.forEach { assertContains("Packing task ':$it") }
+                cacheableTaskNames.forEach { assertTaskPackedToCache(":$it") }
             }
 
             workingDir = workingDirs[1]