D8 dexing error using authn_android

[thereallukesimpson]

In order to support Android 6 (SDK 23) for custom Okta login we have implemented the anthn_android library as described here: https://github.com/okta/okta-oidc-android/tree/authn_android

It appears to work for dev builds, even local local builds obfuscated with R8, but we get an error in CI/locally due to the following desugar tasks failing:

desugarDebugFileDependencies FAILED
desugarDebugAndroidTestFileDependencies FAILED

Note that these tasks also fail locally. Detailed stack trace below.

Here are details of our current configuration:

Android Studio 4.0.1
Android Gradle Plugin 4.0.1
Gradle Version 6.1.1

Note we have a multi-module app structure.

Please advise how we might be able to address this.

> Task :app:desugarDebugFileDependencies
D8: Merging dex file containing classes with prefix 'j$.' with classes with any other prefixes is not allowed.
Stack trace:
com.android.tools.r8.errors.a: Merging dex file containing classes with prefix 'j$.' with classes with any other prefixes is not allowed.
        at com.android.tools.r8.ir.conversion.O.a(:84)
        at com.android.tools.r8.ir.conversion.O.a(:53)
        at com.android.tools.r8.graph.C.b(:40)
        at com.android.tools.r8.ir.conversion.O.b(:35)
        at com.android.tools.r8.utils.U0.a(:10)
        at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125)
        at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69)
        at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)
        at com.google.common.util.concurrent.MoreExecutors$DirectExecutorService.execute(MoreExecutors.java:322)
        at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
        at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:66)
        at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:36)
        at com.android.tools.r8.utils.U0.a(:3)
        at com.android.tools.r8.ir.conversion.O.a(:10)
        at com.android.tools.r8.D8.d(:29)
        at com.android.tools.r8.D8.b(:1)
        at com.android.tools.r8.utils.W.a(:30)
        at com.android.tools.r8.D8.run(:11)
        at com.android.builder.dexing.D8DexArchiveBuilder.convert(D8DexArchiveBuilder.java:116)
        at com.android.builder.dexing.DexArchiveBuilder.convert$default(DexArchiveBuilder.kt:46)
        at com.android.build.gradle.internal.tasks.DexFileDependenciesTask$DexFileDependenciesWorkerAction.run(DexFileDependenciesTask.kt:153)
        at com.android.build.gradle.internal.tasks.Workers$ActionFacade.run(Workers.kt:242)
        at org.gradle.workers.internal.AdapterWorkAction.execute(AdapterWorkAction.java:50)
        at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:50)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:63)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:59)
        at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:98)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1.lambda$execute$0(NoIsolationWorkerFactory.java:59)
        at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
        at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
        at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1.execute(NoIsolationWorkerFactory.java:53)
        at org.gradle.workers.internal.DefaultWorkerExecutor.lambda$submitWork$2(DefaultWorkerExecutor.java:200)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:215)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:164)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:131)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
        at java.base/java.lang.Thread.run(Thread.java:834)
        Suppressed: java.util.concurrent.ExecutionException: com.android.tools.r8.errors.a: Merging dex file containing classes with prefix 'j$.' with classes with any other prefixes is not allowed.
                at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:552)
                at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:513)
                at com.google.common.util.concurrent.FluentFuture$TrustedFuture.get(FluentFuture.java:86)
                at com.android.tools.r8.utils.U0.a(:14)
                at com.android.tools.r8.utils.U0.a(:9)
                ... 39 more
        [CIRCULAR REFERENCE:com.android.tools.r8.errors.a: Merging dex file containing classes with prefix 'j$.' with classes with any other prefixes is not allowed.]


> Task :app:desugarDebugFileDependencies FAILED

[FeiChen-okta]

Hi @thereallukesimpson I don't think you need to use that library anymore as Android Studio 4 with gradle plugin 4 supports desugaring and Java8 features https://developer.android.com/studio/write/java8-support

You can remove that library dependency since you are using Android Studio 4.0.1

[JayNewstrom]

@thereallukesimpson we've made some documentation updates to the readmes for this. Please comment or reopen if you're still having this issue. Thanks.