[Daemon] Improve some daemon log messages

A few messages were improved:
  * If the daemon process died at the startup, add its last 10 lines of the output to the log and report to the EXCEPTION (ERROR in the case of Gradle) level
  * If some exception occurs during connection attempt, add its stacktrace and report to the EXCEPTION (ERROR in the case of Gradle) level
  * Added more DEBUG level messages
  * Some important messages are moved to the INFO level
  * Added a suggestion to report issue to kotl.in/issue
^KT-55322 Fixed

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

@@ -69,10 +69,6 @@ class ExecutionStrategyJvmIT : ExecutionStrategyIT() {
 }
 
 abstract class ExecutionStrategyIT : KGPDaemonsBaseTest() {
-    override val defaultBuildOptions: BuildOptions = super.defaultBuildOptions.copy(
-        logLevel = LogLevel.DEBUG
-    )
-
     @DisplayName("Compilation via Kotlin daemon")
     @GradleTest
     fun testDaemon(gradleVersion: GradleVersion) {
@@ -113,7 +109,9 @@ abstract class ExecutionStrategyIT : KGPDaemonsBaseTest() {
                 "build",
                 "-Pkotlin.daemon.jvmargs=-Xmxqwerty",
             ) {
-                assertOutputContains("Failed to compile with Kotlin daemon. Fallback strategy (compiling without Kotlin daemon) is turned off.")
+                assertOutputContains("Invalid maximum heap size: -Xmxqwerty")
+                assertOutputContains("Failed to compile with Kotlin daemon.")
+                assertOutputContains("Fallback strategy (compiling without Kotlin daemon) is turned off.")
             }
         }
     }
@@ -146,7 +144,9 @@ abstract class ExecutionStrategyIT : KGPDaemonsBaseTest() {
                 "build",
                 "-Pkotlin.daemon.jvmargs=-Xmxqwerty",
             ) {
-                assertOutputContains("Failed to compile with Kotlin daemon. Fallback strategy (compiling without Kotlin daemon) is turned off.")
+                assertOutputContains("Invalid maximum heap size: -Xmxqwerty")
+                assertOutputContains("Failed to compile with Kotlin daemon.")
+                assertOutputContains("Fallback strategy (compiling without Kotlin daemon) is turned off.")
             }
         }
     }
@@ -212,7 +212,12 @@ abstract class ExecutionStrategyIT : KGPDaemonsBaseTest() {
                     executionStrategy
                 } else {
                     null
-                }
+                },
+                logLevel = if (!testFallbackStrategy && executionStrategy == KotlinCompilerExecutionStrategy.DAEMON) {
+                    LogLevel.DEBUG // used daemon JVM options are reported only to the DEBUG logs
+                } else {
+                    defaultBuildOptions.logLevel
+                },
             )
         ) {
             setupProject(this)
@@ -232,6 +237,7 @@ abstract class ExecutionStrategyIT : KGPDaemonsBaseTest() {
                 assertNoBuildWarnings()
 
                 if (testFallbackStrategy) {
+                    assertOutputContains("Invalid maximum heap size: -Xmxqwerty")
                     assertOutputContains("Using fallback strategy: Compile without Kotlin daemon")
                 } else if (executionStrategy == KotlinCompilerExecutionStrategy.DAEMON) {
                     // 256m is the default value for Gradle 5.0+

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

@@ -158,9 +158,12 @@ fun BuildResult.assertOutputContainsExactlyTimes(
  * Assert build contains no warnings.
  */
 fun BuildResult.assertNoBuildWarnings(
-    expectedWarnings: Set<String> = emptySet(),
+    additionalExpectedWarnings: Set<String> = emptySet(),
 ) {
-    val cleanedOutput = expectedWarnings.fold(output) { acc, s ->
+    val expectedWarnings = setOf(
+        "w: [InternalKotlinGradlePluginPropertiesUsed | WARNING] ATTENTION! This build uses the following Kotlin Gradle Plugin properties:"
+    )
+    val cleanedOutput = (expectedWarnings + additionalExpectedWarnings).fold(output) { acc, s ->
         acc.replace(s, "")
     }
     val warnings = cleanedOutput
@@ -176,7 +179,6 @@ fun BuildResult.assertNoBuildWarnings(
 }
 
 val expectedK2KaptWarnings = setOf(
-    "w: [InternalKotlinGradlePluginPropertiesUsed | WARNING] ATTENTION! This build uses the following Kotlin Gradle Plugin properties:",
     "w: Kapt currently doesn't support language version 2.0+. Falling back to 1.9."
 )
 

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerWork.kt

@@ -162,10 +162,17 @@ internal class GradleKotlinCompilerWork @Inject constructor(
                     severity = CompilerMessageSeverity.EXCEPTION,
                     message = "Daemon compilation failed: ${e.message}\n${e.stackTraceToString()}"
                 )
+                val recommendation = """
+                    Try ./gradlew --stop if this issue persists
+                    If it does not look related to your configuration, please file an issue with logs to https://kotl.in/issue
+                """.trimIndent()
                 if (!config.compilerExecutionSettings.useDaemonFallbackStrategy) {
                     throw RuntimeException(
-                        "Failed to compile with Kotlin daemon. Fallback strategy (compiling without Kotlin daemon) is turned off. " +
-                                "Try ./gradlew --stop if this issue persists.",
+                        """
+                        |Failed to compile with Kotlin daemon.
+                        |Fallback strategy (compiling without Kotlin daemon) is turned off.
+                        |$recommendation
+                        """.trimMargin(),
                         e
                     )
                 }
@@ -174,7 +181,7 @@ internal class GradleKotlinCompilerWork @Inject constructor(
                     """
                     |Failed to compile with Kotlin daemon: $failDetails
                     |Using fallback strategy: Compile without Kotlin daemon
-                    |Try ./gradlew --stop if this issue persists.
+                    |$recommendation
                     """.trimMargin()
                 )
             }

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/compilerRunner/reportUtils.kt

@@ -238,7 +238,7 @@ internal val KotlinCompilerExecutionStrategy.asFinishLogMessage: String
     get() = "Finished executing kotlin compiler using $this strategy"
 
 internal fun KotlinLogger.logFinish(strategy: KotlinCompilerExecutionStrategy) {
-    debug(strategy.asFinishLogMessage)
+    info(strategy.asFinishLogMessage)
 }
 
 internal fun exitCodeFromProcessExitCode(log: KotlinLogger, code: Int): ExitCode {