Minor. Fix compilation

buildSrc/src/main/kotlin/tasks.kt

@@ -100,7 +100,7 @@ fun Project.projectTest(taskName: String = "test", body: Test.() -> Unit = {}):
     systemProperty("kotlin.ni", if (rootProject.hasProperty("newInferenceTests")) "true" else "false")
 
     //Temporary workaround for "not enough space" on Teamcity agents: should be fixed soon on Teamcity side
-    val teamcity = rootProject.property("teamcity") as? Map<*, *>
+    val teamcity = rootProject.findProperty("teamcity") as? Map<*, *>
     (teamcity?.get("teamcity.build.tempDir") as? String)?.let {
         systemProperty("java.io.tmpdir", it)
     }