Fix flaky tests with ConcurrentModificationException

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/statistics/BuildFlowService.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.gradle.plugin.statistics
 
 import org.gradle.api.Project
 import org.gradle.api.invocation.Gradle
+import org.gradle.api.logging.Logging
 import org.gradle.api.provider.Property
 import org.gradle.api.provider.Provider
 import org.gradle.api.services.BuildService
@@ -16,6 +17,7 @@ import org.gradle.tooling.events.OperationCompletionListener
 import org.gradle.tooling.events.task.TaskFailureResult
 import org.gradle.tooling.events.task.TaskFinishEvent
 import org.gradle.util.GradleVersion
+import org.jetbrains.kotlin.gradle.logging.kotlinDebug
 import org.jetbrains.kotlin.gradle.plugin.BuildEventsListenerRegistryHolder
 import org.jetbrains.kotlin.gradle.plugin.StatisticsBuildFlowManager
 import org.jetbrains.kotlin.gradle.plugin.internal.isProjectIsolationEnabled
@@ -30,6 +32,11 @@ import java.io.Serializable
 
 internal abstract class BuildFlowService : BuildService<BuildFlowService.Parameters>, AutoCloseable, OperationCompletionListener {
     private var buildFailed: Boolean = false
+    private val log = Logging.getLogger(this.javaClass)
+
+    init {
+        log.kotlinDebug("Initialize ${this.javaClass.simpleName}")
+    }
 
     interface Parameters : BuildServiceParameters {
         val configurationMetrics: Property<MetricContainer>
@@ -91,6 +98,7 @@ internal abstract class BuildFlowService : BuildService<BuildFlowService.Paramet
     }
 
     override fun onFinish(event: FinishEvent?) {
+        parameters.fusStatisticsAvailable.get() //force to calculate configuration metrics before build finish
         if ((event is TaskFinishEvent) && (event.result is TaskFailureResult)) {
             buildFailed = true
         }
@@ -103,6 +111,7 @@ internal abstract class BuildFlowService : BuildService<BuildFlowService.Paramet
         KotlinBuildStatsService.applyIfInitialised {
             it.close()
         }
+        log.kotlinDebug("Close ${this.javaClass.simpleName}")
     }
 
     internal fun recordBuildFinished(action: String?, buildFailed: Boolean) {

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/statistics/KotlinBuildStatHandler.kt

@@ -105,7 +105,8 @@ class KotlinBuildStatHandler {
             gradle.allprojects { project ->
                 collectAppliedPluginsStatistics(project, configurationTimeMetrics)
 
-                for (configuration in project.configurations) {
+                val configurations = project.configurations.asMap.values
+                for (configuration in configurations) {
                     try {
                         val configurationName = configuration.name
                         val dependencies = configuration.dependencies
@@ -144,7 +145,7 @@ class KotlinBuildStatHandler {
                         // log?
                     }
                 }
-                val taskNames = project.tasks.names
+                val taskNames = project.tasks.names.toList()
 
                 configurationTimeMetrics.put(NumericalMetrics.NUMBER_OF_SUBPROJECTS, 1)
                 configurationTimeMetrics.put(