diff --git a/libraries/tools/kotlin-gradle-plugin/src/test/kotlin/org/jetbrains/kotlin/gradle/internal/testing/tcsmc/Complex.kt b/libraries/tools/kotlin-gradle-plugin/src/test/kotlin/org/jetbrains/kotlin/gradle/internal/testing/tcsmc/Complex.kt
index d9c9f39b681..4bccfe58b3b 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/test/kotlin/org/jetbrains/kotlin/gradle/internal/testing/tcsmc/Complex.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/test/kotlin/org/jetbrains/kotlin/gradle/internal/testing/tcsmc/Complex.kt
@@ -75,21 +75,21 @@ COMPLETED FAILURE // jsTest
             /**/serviceMessage(TestStarted("my.company.product.MyTest.myTest1", false, null))
             /**/serviceMessage(TestFinished("my.company.product.MyTest.myTest1", 1))
             /**/serviceMessage(TestStarted("my.company.product.MyTest.myTest2", false, null))
-            /**/serviceMessage(TestFailed("my.company.product.MyTest.myTest2", null))
+            /**/serviceMessage(TestFailed("my.company.product.MyTest.myTest2", null as Throwable?))
             /**/serviceMessage(TestFinished("my.company.product.MyTest.myTest2", 1))
             /**/serviceMessage(TestIgnored("my.company.product.MyTest.myTest3", ""))
             /**/serviceMessage(TestSuiteStarted("MyTestNested"))
             /**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNested.myTest4", false, null))
             /**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNested.myTest4", 1))
             /**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNested.myTest5", false, null))
-            /**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNested.myTest5", null))
+            /**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNested.myTest5", null as Throwable?))
             /**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNested.myTest5", 1))
             /**//**/serviceMessage(TestIgnored("my.company.product.MyTest.MyTestNested.myTest6", ""))
             /**//**/serviceMessage(TestSuiteStarted("MyTestNestedNested"))
             /**//**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNestedNested.myTest7", false, null))
             /**//**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNestedNested.myTest7", 1))
             /**//**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNestedNested.myTest8", false, null))
-            /**//**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNestedNested.myTest8", null))
+            /**//**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNestedNested.myTest8", null as Throwable?))
             /**//**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNestedNested.myTest8", 1))
             /**//**//**/serviceMessage(TestIgnored("my.company.product.MyTest.MyTestNestedNested.myTest9", ""))
             /**//**/serviceMessage(TestSuiteFinished("MyTestNestedNested"))
@@ -100,7 +100,7 @@ COMPLETED FAILURE // jsTest
             /**/serviceMessage(TestStarted("my.company.product.MyTest2.myTest10", false, null))
             /**/serviceMessage(TestFinished("my.company.product.MyTest2.myTest10", 1))
             /**/serviceMessage(TestStarted("my.company.product.MyTest2.myTest11", false, null))
-            /**/serviceMessage(TestFailed("my.company.product.MyTest2.myTest11", null))
+            /**/serviceMessage(TestFailed("my.company.product.MyTest2.myTest11", null as Throwable?))
             /**/serviceMessage(TestFinished("my.company.product.MyTest2.myTest11", 1))
             /**/serviceMessage(TestIgnored("my.company.product.MyTest2.myTest12", ""))
             /**/serviceMessage(TestSuiteStarted("MyTest2Nested"))
@@ -163,21 +163,21 @@ COMPLETED FAILURE // iosTest
             /**/serviceMessage(TestStarted("my.company.product.MyTest.myTest1", false, null))
             /**/serviceMessage(TestFinished("my.company.product.MyTest.myTest1", 1))
             /**/serviceMessage(TestStarted("my.company.product.MyTest.myTest2", false, null))
-            /**/serviceMessage(TestFailed("my.company.product.MyTest.myTest2", null))
+            /**/serviceMessage(TestFailed("my.company.product.MyTest.myTest2", null as Throwable?))
             /**/serviceMessage(TestFinished("my.company.product.MyTest.myTest2", 1))
             /**/serviceMessage(TestIgnored("my.company.product.MyTest.myTest3", ""))
             /**/serviceMessage(TestSuiteStarted("my.company.product.MyTest.MyTestNested"))
             /**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNested.myTest4", false, null))
             /**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNested.myTest4", 1))
             /**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNested.myTest5", false, null))
-            /**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNested.myTest5", null))
+            /**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNested.myTest5", null as Throwable?))
             /**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNested.myTest5", 1))
             /**//**/serviceMessage(TestIgnored("my.company.product.MyTest.MyTestNested.myTest6", ""))
             /**//**/serviceMessage(TestSuiteStarted("my.company.product.MyTest.MyTestNested.MyTestNestedNested"))
             /**//**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNestedNested.myTest7", false, null))
             /**//**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNestedNested.myTest7", 1))
             /**//**//**/serviceMessage(TestStarted("my.company.product.MyTest.MyTestNestedNested.myTest8", false, null))
-            /**//**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNestedNested.myTest8", null))
+            /**//**//**/serviceMessage(TestFailed("my.company.product.MyTest.MyTestNestedNested.myTest8", null as Throwable?))
             /**//**//**/serviceMessage(TestFinished("my.company.product.MyTest.MyTestNestedNested.myTest8", 1))
             /**//**//**/serviceMessage(TestIgnored("my.company.product.MyTest.MyTestNestedNested.myTest9", ""))
             /**//**/serviceMessage(TestSuiteFinished("my.company.product.MyTest.MyTestNested.MyTestNestedNested"))