Internal error has occurred in rule [lambda-length]

My configuration without yml file: diktat { inputs { include("src/**/*.kts", "src/**/*.kts", "*.kts") exclude("build/**") } debug = true }

Kotlin version: 1.6.10 diktat version: 1.0.2

[ERROR] 2022-01-22 21:47:31 Internal error has occurred in rule [lambda-length]. Please make an issue on this bug at https://github.com/cqfn/diKTat/. As a workaround you can disable these inspections in yml config: <[TOO_MANY_LINES_IN_LAMBDA]>. Root cause of the problem is in […\configuration-plugin\build.gradle.kts] file. java.lang.NoClassDefFoundError: Could not initialize class org.jetbrains.kotlin.com.intellij.openapi.util.objectTree.ThrowableInterner at org.jetbrains.kotlin.com.intellij.util.exception.FrequentErrorLogger.report(FrequentErrorLogger.java:47) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.util.exception.FrequentErrorLogger.info(FrequentErrorLogger.java:43) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.DebugUtil.handleUnspecifiedTrace(DebugUtil.java:628) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.DebugUtil.currentInvalidationTrace(DebugUtil.java:620) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.DebugUtil.calcInvalidationTrace(DebugUtil.java:614) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.DebugUtil.onInvalidated(DebugUtil.java:585) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.TreeElement.onInvalidated(TreeElement.java:226) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.TreeElement.rawRemoveUpToWithoutNotifications(TreeElement.java:388) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.TreeElement.rawRemoveUpTo(TreeElement.java:342) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.CompositeElement.removeChildrenInner(CompositeElement.java:802) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.CompositeElement.removeChildInner(CompositeElement.java:790) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.CompositeElement.removeChild(CompositeElement.java:606) ~[kotlin-compiler-embeddable-1.6.10.jar:1.6.10-release-923(1.6.10)] at org.cqfn.diktat.ruleset.rules.chapter5.LambdaLengthRule.checkLambda(LambdaLengthRule.kt:39) ~[diktat-rules-1.0.2.jar:?] at org.cqfn.diktat.ruleset.rules.chapter5.LambdaLengthRule.logic(LambdaLengthRule.kt:29) ~[diktat-rules-1.0.2.jar:?] at org.cqfn.diktat.ruleset.rules.DiktatRule.visit(DiktatRule.kt:50) ~[diktat-rules-1.0.2.jar:?] at com.pinterest.ktlint.core.KtLint$lint$1.invoke(KtLint.kt:160) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.KtLint$lint$1.invoke(KtLint.kt:153) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.KtLint$visitor$2$1.invoke(KtLint.kt:307) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.KtLint$visitor$2$1.invoke(KtLint.kt:305) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:229) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.KtLint$visitor$2.invoke(KtLint.kt:305) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.KtLint$visitor$2.invoke(KtLint.kt:300) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.core.KtLint.lint(KtLint.kt:153) ~[ktlint-core-0.43.2.jar:?] at com.pinterest.ktlint.internal.FileUtilsKt.lintFile(FileUtils.kt:172) ~[ktlint-0.43.2.jar:0.43.2] at com.pinterest.ktlint.KtlintCommandLine.process(Main.kt:395) ~[ktlint-0.43.2.jar:0.43.2] at com.pinterest.ktlint.KtlintCommandLine.access$process(Main.kt:89) ~[ktlint-0.43.2.jar:0.43.2] at com.pinterest.ktlint.KtlintCommandLine$lintFiles$3.invoke$lambda-0(Main.kt:289) ~[ktlint-0.43.2.jar:0.43.2] at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) [?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [?:?] at java.lang.Thread.run(Thread.java:833) [?:?] Exception in thread “main” java.util.concurrent.ExecutionException: java.lang.Error: Internal error in diktat application at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) at com.pinterest.ktlint.KtlintCommandLine.parallel(Main.kt:576) Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private transient java.lang.Object java.lang.Throwable.backtrace accessible: module java.base does not “opens java.lang” to unnamed module @24273305

at com.pinterest.ktlint.KtlintCommandLine.parallel$default(Main.kt:548)
at com.pinterest.ktlint.KtlintCommandLine.lintFiles(Main.kt:298)
at com.pinterest.ktlint.KtlintCommandLine.run(Main.kt:262)
at com.pinterest.ktlint.Main.main(Main.kt:70)

Caused by: java.lang.Error: Internal error in diktat application at org.cqfn.diktat.ruleset.rules.DiktatRule.visit(DiktatRule.kt:61) at com.pinterest.ktlint.core.KtLint$lint$1.invoke(KtLint.kt:160) at com.pinterest.ktlint.core.KtLint$lint$1.invoke(KtLint.kt:153) at com.pinterest.ktlint.core.KtLint$visitor$2$1.invoke(KtLint.kt:307) at com.pinterest.ktlint.core.KtLint$visitor$2$1.invoke(KtLint.kt:305) at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:229) at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) at com.pinterest.ktlint.core.ast.PackageKt.visit(package.kt:230) at com.pinterest.ktlint.core.KtLint$visitor$2.invoke(KtLint.kt:305) at com.pinterest.ktlint.core.KtLint$visitor$2.invoke(KtLint.kt:300) at com.pinterest.ktlint.core.KtLint.lint(KtLint.kt:153) at com.pinterest.ktlint.internal.FileUtilsKt.lintFile(FileUtils.kt:172) at com.pinterest.ktlint.KtlintCommandLine.process(Main.kt:395) at com.pinterest.ktlint.KtlintCommandLine.access$process(Main.kt:89) at com.pinterest.ktlint.KtlintCommandLine$lintFiles$3.invoke$lambda-0(Main.kt:289) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:833) Caused by: java.lang.Error: Internal error in diktat application

[WebTiger89]

@petertrr cool, thanks for your time and investigation! I guess the ticket can be closed

[petertrr]

Yep, I can reproduce the following error

Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private transient java.lang.Object java.lang.Throwable.backtrace accessible: module java.base does not "opens java.lang" to unnamed module ...

on openjdk 16 and 17. Everything works fine on openjdk <15. I also found the same issue tracked in ktlint: https://github.com/pinterest/ktlint/issues/1195.

As suggested there, the issue can be worked around by manually opening required JVM modules. With this fix in build.gradle.kts

tasks.withType<org.cqfn.diktat.plugin.gradle.DiktatJavaExecTaskBase> {
    jvmArgs("--add-opens", "java.base/java.lang=ALL-UNNAMED")
}

I was able to run you sample without this error.