D8 desugars Java 8-only APIs when L8 library desugaring is enabled, resulting in runtime errors on pre-API-24 devices [157681341]

Fixed

Bug

Status Update

No update yet.

Description

za...@gmail.com

created issue #1

May 29, 2020 04:57AM

This was a bit tricky to track down, and I'm not 100% certain I've pinned this right so I hope this is right.

Env: AGP 4.1.0-alpha09 stable, desugar_jdk_libs 1.0.5. Also reproducible in AGP 4.0.0

Repro case: https://github.com/ZacSweers/CatchUp/tree/91848344e50e15e7b495ce0b22440b22b6445891

Run ./gradlew :app:assembleDebug and attempt to run on a pre-API-24 device (sdk 21, 22, or 23). Observe it will crash on startup when it attempts to load OkHttp's Headers clas:

No pending exception expected: java.lang.NoClassDefFoundError: $r8$wrapper$java$util$Spliterator$-WRP
  at java.lang.Class dalvik.system.DexFile.defineClassNative(java.lang.String, java.lang.ClassLoader, java.lang.Object) (DexFile.java:-2)
  at java.lang.Class dalvik.system.DexFile.defineClass(java.lang.String, java.lang.ClassLoader, java.lang.Object, java.util.List) (DexFile.java:226)
  at java.lang.Class dalvik.system.DexFile.loadClassBinaryName(java.lang.String, java.lang.ClassLoader, java.util.List) (DexFile.java:219)
  at java.lang.Class dalvik.system.DexPathList.findClass(java.lang.String, java.util.List) (DexPathList.java:338)
  at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:54)
  at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:511)
  at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:469)
  at void okhttp3.internal.Util.<clinit>() (Util.kt:64)
  at okhttp3.HttpUrl$Builder okhttp3.HttpUrl$Builder.parse$okhttp(okhttp3.HttpUrl, java.lang.String) (HttpUrl.kt:1239)
  at okhttp3.HttpUrl okhttp3.HttpUrl$Companion.get(java.lang.String) (HttpUrl.kt:1633)
  at okhttp3.HttpUrl okhttp3.HttpUrl.get(java.lang.String) (HttpUrl.kt:-1)
  at retrofit2.Retrofit$Builder retrofit2.Retrofit$Builder.baseUrl(java.lang.String) (Retrofit.java:506)
  at io.sweers.catchup.ui.bugreport.ImgurUploadApi io.sweers.catchup.ui.bugreport.BugReportModule.provideImgurService$catchup_debug(dagger.Lazy, com.squareup.moshi.Moshi, retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory, dev.zacsweers.catchup.appconfig.AppConfig) (BugReportApi.kt:80)

The trace is a little confusing, but in short it starts to fall over on this line in Headers.kt:64

val EMPTY_HEADERS = headersOf()

This is trying to then load the Headers class, which implements Iterable. Ref: https://github.com/square/okhttp/blob/master/okhttp/src/main/kotlin/okhttp3/Headers.kt

This is where things get interesting, and requires inspecting the dalvik bytecode in APK analyzer. This project targets Java 8 sources and uses AGP's new library desugaring. The combination of these results in the following dalvik bytecode for Headers

.method public synthetic spliterator()Lj$/util/Spliterator;
    .registers 2
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "()",
            "Ljava/util/Spliterator<",
            "TT;>;"
        }
    .end annotation
    invoke-static {p0}, Lj$/lang/Iterable$-CC;->$default$spliterator(Ljava/lang/Iterable;)Lj$/util/Spliterator;
    move-result-object v0
    return-object v0
.end method

.method public synthetic spliterator()Ljava/util/Spliterator;
    .registers 2
    invoke-virtual {p0}, Lokhttp3/Headers;->spliterator()Lj$/util/Spliterator;
    move-result-object v0
    invoke-static {v0}, L$r8$wrapper$java$util$Spliterator$-WRP;->convert(Lj$/util/Spliterator;)Ljava/util/Spliterator;
    move-result-object v0
    return-object v0
.end method

Ah! D8 has desugared the default spliterator() methods from Iterator. It's actually done it twice, once for L8's version and once for the JDK. I believe the exception above is originating from the presence of the second one, which still returns the Java 8 version. I can't be totally sure though. The NoClassDefFoundError doesn't quite make sense because the $r8$wrapper$java$util$Spliterator$-WRP class is present in the APK.

When you run this APK on an API 24 device, it works fine.

When you build the release version (which minifies with R8), the Java 8 method is stripped.

We could, potentially, just use API 24 devices for debug builds to work around this, but it does seem surprising behavior and potentially a big problem for apps not exercising this code path. This is worsed by the ubiquity of a library like OkHttp hitting his on hot paths.

Comments

za...@gmail.com <za...@gmail.com> #2May 29, 2020 05:03AM

Automated by Blunderbuss job edu-devrel-blunderbuss-autoassigner for component 191645.

ag...@google.com <ag...@google.com> May 29, 2020 05:15AM

Reassigned to cl...@google.com.

ag...@google.com <ag...@google.com> Jun 2, 2020 08:01AM

Reassigned to ze...@google.com.

ze...@google.com <ze...@google.com> #3Jun 2, 2020 11:56AM

Upon some more investigation, I've noticed that Excusing a submission via the UI simply removes it from calculation of overall grade within the UI. However, the actual score of the submission does not change -- in my original case reported above, the original score I gave to the submission was 0, and then I marked it as Excused.

In my opinion, at least one of the two should change with regards to the behavior of Excusing an assignment:

1. Any original score returned to the student should be erased from the submission entirely. This should make the returned grade empty/null, so the API response does not need any special indicator for an excused grade.
2. If a returned grade should still be associated with a submission (but not count towards the overall grade like the Google Classroom UI calculates), then this same flag/indicator should be exposed via the API so that a similar overall grade calculation can be performed from the API response.

ze...@google.com <ze...@google.com> #4Jun 2, 2020 12:36PM

Thanks for providing feedback around supporting excused assignments in the Classroom API! I've made a note of your comments and transferred them internally. Any updates about this will be communicated here.

ze...@google.com <ze...@google.com> #5Jun 2, 2020 01:37PM

We are an SIS that consumes Classroom data via the API.

What we are observing:

we don't get StudentSubmissions where student was never scored and was excused, so parents are confused thinking that work is not done when it should be excused when looking in our platform.
When a student is scored, grades are synced, then excused, we don't get the update that the assignment was excused. So now the student has a score (0 or otherwise) that doesn't reflect what's in Google Classroom, creating discrepancies between Classroom assignment grades and SIS assignment grades.

ze...@google.com <ze...@google.com> #6Jun 2, 2020 02:28PM

Thanks for providing supporting feedback. I'd love to learn a bit more about your comment:

"we don't get StudentSubmissions where student was never scored and was excused, so parents are confused thinking that work is not done when it should be excused when looking in our platform."

Can you provide more information on the API call you are making here so I can try to figure out the issue? I'm not able to reproduce this at the moment; when reading student submissions by calling ListStudentSubmissions, I'm able to retrieve submissions that are marked as excused in the UI.

"When a student is scored, grades are synced, then excused, we don't get the update that the assignment was excused. So now the student has a score (0 or otherwise) that doesn't reflect what's in Google Classroom, creating discrepancies between Classroom assignment grades and SIS assignment grades."

Trying to understand this issue a bit further - if I understand correctly, there may be grade discrepancies between Classroom and SIS in the event that a teacher modifies a grade after the grades have been synced with the SIS. Do you have a mechanism today by which you monitor these types of grade changes? If not, is being alerted about excused assignments more important than other types of submission changes?

za...@gmail.com <za...@gmail.com> #7Jun 2, 2020 03:06PM

Thank you for adding the option to mark an assignment excused. What I have noticed, however, is that the Classroom API does not support a means of detecting Excused assignments.

We use a platform (Schoolytics) that mines the data from Classroom via the API to give parents and students updates and reports about their students' progress. Unfortunately, excused assignments (e.g. because the student was not yet enrolled at our school) are being misidentified as missing.

We use Aeries as our SIS and gradebooks.

cl...@mobilepay.dk <cl...@mobilepay.dk> #8Jun 2, 2020 03:52PM

If anyone is looking for a way of detecting if the assignment was excused for a student, I noticed that {} gets added to `submissionHistory` array of the respective `StudentSubmission` object when the assignment is excused. Same when it is "unexcused". So my current workaround is to count number of {} in the `submissionHistory` array, and if such number is odd, assignment is excused, if even, it is not.

However, I am not sure if there is some other situation when {} gets added to the `submissionHistory` as well and thus breaking this workaround. I did not encounter any other situation when this happens.

UPDATE: As noticed by 34...@gmail.com, marking solution as complete by the teacher also adds empty object which breaks this solution unfortunately.

ze...@google.com <ze...@google.com> #9Jun 2, 2020 05:18PM

^ I tried this but it seems the "Mark as complete" action also adds an empty object to submissionHistory, which may break your logic.

zs...@salesforce.com <zs...@salesforce.com> #10Jun 2, 2020 10:04PM

Is anyone aware of any updates on this issue?

ze...@google.com <ze...@google.com> #11Jun 3, 2020 06:29AM

To revive it, I had ChatGPT look at this important issue, and effectively stumped it. Specifically, I gave it quite a bit of output from the log consisting of paired assignment/submission objects in JSON. I manually marked the EXCUSED entries and asked it to compare these to the unmarked ones to find patterns helpful for detecting excused assignments programmatically. I thought ChatGPT's (rather bleak) assessment was pretty spot on, so I'll share:

Short Answer: Unfortunately, Google Classroom’s API does not expose “Excused” in its returned data, even though Classroom’s front-end UI does let a teacher mark certain student assignments “Excused.” There is no separate field excused in the JSON you receive.

Because of that, there’s no sure-fire pattern in the API data alone (e.g. grade = 0 or missing) that tells you “this was marked as Excused in Classroom.” The only way to see that directly is from the teacher’s perspective in the web UI, or by manually adding your own flag in any software you build around the Classroom API.

Why We Can’t Detect “Excused” from the Classroom API

Google’s Docs Omit Excused The official Classroom API docs don’t mention any field to store or return an “Excused” status. The states we can see are things like CREATED, TURNED_IN, or RETURNED, plus numeric grades or draftGrade, but “Excused” never appears as a separate field.

No Hints in the JSON If you look over the raw JSON for each submission, you’ll notice no consistent or even hidden property that flips from false to true for “excused.” Some submissions have no grades, others do. Some are turned in, others aren’t—none of it correlates reliably to “excused.”

Google’s UI vs. Under-the-Hood The Classroom GUI is effectively toggling an internal “excused” marker that Google does not share in the public API. This is similar to how some SIS features in Classroom do not appear in the standard data feed.

Bottom Line

Right now, the official Classroom API simply does not expose the “Excused” status. Your only options are to keep tagging “excused” in your own records—or file a feature request with Google to add it to the Classroom API. But there is no built-in field or pattern in the raw submission JSON that reveals whether a teacher checked the “Excused” box in the Classroom web interface.`

My bottom line: Seems like a pretty simple solution to add a boolean attribute to the submission object called Excused.

sg...@google.com <sg...@google.com> #12Jun 3, 2020 07:04AM

The reason for the strange desugared-library-identifiers value of desugared-library-identifiers":["com.tools.android:desugar_jdk_libs:0.11.1"] in comment #6 is a bug in the generation of the marker. The artifact com.tools.android:desugar_jdk_libs:1.0.5 has a dependency on com.tools.android:desugar_jdk_libs_configuration:0.11.1, and the marker take the version from com.tools.android:desugar_jdk_libs_configuration and combines it with com.tools.android:desugar_jdk_libs.

Opened b/158038840.

cl...@mobilepay.dk <cl...@mobilepay.dk> #13Jun 3, 2020 07:49AM

comment #9

: Yes, I got:

find . -name \*wrapper\*Spliterator\$-WRP.smali
./smali_classes3/j$/$r8$wrapper$java$util$Spliterator$-WRP.smali
./smali_classes5/$r8$wrapper$java$util$Spliterator$-WRP.smali
./smali_classes2/$r8$wrapper$java$util$Spliterator$-WRP.smali

ze...@google.com <ze...@google.com> #14Jun 3, 2020 08:51AM

Thanks for confirming.

We have confirmed the issue is due to the duplicate classes in the non-j$ top-level package. The VM behavior duplicate classes is undefined and on some older VMs leads to errors (likely due to direct class constant references, but that is not verified). The compilers are assuming that a final merge step with D8 which will correctly de-duplicate these, but in the debug build that merge is not done for libraries which are instead appended as addition classesX.dex files.

Any release build (with or without R8) should not have this issue as the final merge step is always done for that. Is that consistent with your observations?

CC Ivan, regarding the build aspects of this issue.

zs...@salesforce.com <zs...@salesforce.com> #15Jun 4, 2020 03:49AM

Confirmed that if I set isDebuggable to false for my debug build, it works on an API 23 device. Also, if it's of any interest, I tried with the desugar_jdk_libs_configuration dependency only and got a slightly different error in the above repro project

06-03 23:45:25.329 6519-6519/io.sweers.catchup.debug E/AndroidRuntime: FATAL EXCEPTION: main
    Process: io.sweers.catchup.debug, PID: 6519
    java.lang.NoClassDefFoundError: androidx.collection.ArrayMap
        at com.google.firebase.FirebaseApp.<clinit>(com.google.firebase:firebase-common@@19.3.0:102)
        at com.google.firebase.FirebaseApp.initializeApp(com.google.firebase:firebase-common@@19.3.0:240)
        at com.google.firebase.provider.FirebaseInitProvider.onCreate(com.google.firebase:firebase-common@@19.3.0:51)
        at android.content.ContentProvider.attachInfo(ContentProvider.java:1748)
        at android.content.ContentProvider.attachInfo(ContentProvider.java:1723)
        at com.google.firebase.provider.FirebaseInitProvider.attachInfo(com.google.firebase:firebase-common@@19.3.0:45)
        at android.app.ActivityThread.installProvider(ActivityThread.java:5153)
        at android.app.ActivityThread.installContentProviders(ActivityThread.java:4748)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4688)
        at android.app.ActivityThread.-wrap1(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1405)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

ze...@google.com <ze...@google.com> #16Jun 4, 2020 08:48AM

For completeness of the record, the issue is avoided on a 23 emulator image if either one of the two classes are removed, or if the 'implements java.util.Spliterator' is removed from the $r8$wrapper$java$util$Spliterator$-WRP class in classes5.dex. Either of these two changes appears to avoid the failed verification.

I've not been able to reproduce the issue on a headless 6.0.1 VM. The proper fix is to simply not have duplicates, which we can ensure without an exact regression.

ga...@google.com <ga...@google.com> #17Jun 4, 2020 09:25AM

Is $r8$wrapper$java$util$Spliterator$-WRP.smali created by L8? If so, we can make sure to have a single L8 invocation for both desugar_jdk_libs_configuration and android:desugar_jdk_libs. If it is coming from user code, it becomes more tricky as it introduces dependencies between (right now) independent D8 invocations.

ze...@google.com <ze...@google.com> #18Jun 4, 2020 09:47AM

There is one underlying issue, namely that it is undefined behavior to produce DEX files with duplicate classes. So we need to chat a bit about the build setup and the compilers as the compilers are assuming a final merge which will get rid of the duplicates synthesized by various compilation passes. I've filed

b/158159959

to discuss this.

The present issue can be avoided by only generating a single such conversion wrapper and placing it in the core library file. Currently these are created on-demand for the program inputs.

lo...@gmail.com <lo...@gmail.com> #19Jun 4, 2020 10:26AM

That's a private issue that we cannot follow @comment#18

ze...@google.com <ze...@google.com> #20Jun 11, 2020 03:18PM

The issue in #18 is just for discussion of the compiler internals regarding synthesized classes. We should be able to resolve the issue here by placing type conversion wrappers in the desugared library file thereby avoiding any possibility of duplicates. I have most of the required parts for that now and will upload for review shortly.

ap...@google.com <ap...@google.com> #21Jun 15, 2020 07:20AM

Project: r8
Branch: master

commit f03be11f11b8405b69876d05337e917a5519e52a
Author: Ian Zerny <zerny@google.com>
Date: Fri Jun 12 11:35:52 2020

Generate conversion wrappers in the desugared library.

Bug: 157681341
Bug: 158645207
Change-Id: I558fcb4a53c4ae97cb1a27629f7d0572c41fbb1c

M src/main/java/com/android/tools/r8/L8.java
M src/main/java/com/android/tools/r8/dex/ApplicationReader.java
M src/main/java/com/android/tools/r8/dex/CodeToKeep.java
M src/main/java/com/android/tools/r8/graph/LazyLoadedDexApplication.java
M src/main/java/com/android/tools/r8/graph/analysis/DesugaredLibraryConversionWrapperAnalysis.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryAPIConverter.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryConfiguration.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryConfigurationParser.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryWrapperSynthesizer.java
M src/main/java/com/android/tools/r8/shaking/Enqueuer.java
M src/main/java/com/android/tools/r8/utils/AndroidApp.java
M src/main/java/com/android/tools/r8/utils/InternalOptions.java
A src/test/java/com/android/tools/r8/desugar/desugaredlibrary/DesugaredLibaryChecksumsTest.java
M src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/APIConversionTest.java
M src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/ClockAPIConversionTest.java
M src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/FunctionConversionTest.java
M src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/WrapperMergeTest.java

https://r8-review.googlesource.com/52042

ze...@google.com <ze...@google.com> #22Jun 15, 2020 09:48AM

An initial fix for this has landed on our master. It would be great to hear if this works on your end Zac, assuming that out master does not cause other issues. You can use it by linking to the build hash:

buildscript {

repositories {
maven {
url "

https://storage.googleapis.com/r8-releases/raw/master" // NOTICE 'master' here!
}
}

dependencies {
classpath 'com.android.tools:r8:f03be11f11b8405b69876d05337e917a5519e52a' // Must be before the Gradle Plugin for Android.
classpath 'com.android.tools.build:gradle:X.Y.Z' // Your current AGP version.
}
}

FYI, this fix is not ready to be merged to release branches as we want to further change the setup to have an exact list of wrapper types.

zs...@salesforce.com <zs...@salesforce.com> #23Jun 15, 2020 07:29PM

Trying now!

Sidenote - I get a warning from somewhere in AGP about using this, dunno if it matters

Cannot parse shrinker version, assuming 0.0.0

zs...@salesforce.com <zs...@salesforce.com> #24Jun 15, 2020 07:30PM

We get a different failure trying that commit, but just during build time and seems unrelated to library desugaring. Looks to be originating from the coroutines android artifact: https://github.com/Kotlin/kotlinx.coroutines/tree/master/ui/kotlinx-coroutines-android

[2020-06-15T19:24:17.306Z] > com.android.tools.r8.CompilationFailedException: Compilation failed to complete, position: Lkotlinx/coroutines/internal/MainDispatcherLoader;loadMainDispatcher()Lkotlinx/coroutines/MainCoroutineDispatcher;, origin: /mnt/jenkinsslave/gradle_home/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.3.7/8e2eb78158638b33793d204ffef0b65c4a578e1c/kotlinx-coroutines-core-1.3.7.jar:kotlinx/coroutines/internal/MainDispatcherLoader.class

[2020-06-15T19:24:17.306Z] 

[2020-06-15T19:24:17.306Z] * Try:

[2020-06-15T19:24:17.306Z] Run with --info or --debug option to get more log output. Run with --scan to get full insights.

[2020-06-15T19:24:17.306Z] 

[2020-06-15T19:24:17.306Z] * Exception is:

[2020-06-15T19:24:17.307Z] org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:minifyExternalReleaseWithR8'.

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:207)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:263)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:205)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:186)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:114)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:62)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:409)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:399)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:157)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:242)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:150)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:94)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:41)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:356)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)

[2020-06-15T19:24:17.307Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)

[2020-06-15T19:24:17.307Z] Caused by: org.gradle.internal.UncheckedException: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, position: Lkotlinx/coroutines/internal/MainDispatcherLoader;loadMainDispatcher()Lkotlinx/coroutines/MainCoroutineDispatcher;, origin: /mnt/jenkinsslave/gradle_home/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.3.7/8e2eb78158638b33793d204ffef0b65c4a578e1c/kotlinx-coroutines-core-1.3.7.jar:kotlinx/coroutines/internal/MainDispatcherLoader.class

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:67)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:41)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:107)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:49)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:42)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:28)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:726)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:693)

[2020-06-15T19:24:17.307Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$3.run(ExecuteActionsTaskExecuter.java:569)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:395)

[2020-06-15T19:24:17.307Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:387)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:157)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:242)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:150)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:84)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)

[2020-06-15T19:24:17.308Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:554)

[2020-06-15T19:24:17.308Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:537)

[2020-06-15T19:24:17.308Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$300(ExecuteActionsTaskExecuter.java:108)

[2020-06-15T19:24:17.308Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.executeWithPreviousOutputFiles(ExecuteActionsTaskExecuter.java:278)

[2020-06-15T19:24:17.308Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:267)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ExecuteStep.lambda$execute$1(ExecuteStep.java:33)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:33)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:26)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:67)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:36)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:49)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:34)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:43)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:73)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:54)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CatchExceptionStep.execute(CatchExceptionStep.java:34)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:44)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:54)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:38)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:49)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CacheStep.executeWithoutCache(CacheStep.java:159)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CacheStep.executeAndStoreInCache(CacheStep.java:135)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CacheStep.lambda$executeWithCache$2(CacheStep.java:112)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CacheStep.lambda$executeWithCache$3(CacheStep.java:112)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.Try$Success.map(Try.java:162)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CacheStep.executeWithCache(CacheStep.java:81)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:71)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:43)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:44)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:33)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:38)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:24)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:92)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:85)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:55)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:39)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:76)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:37)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:36)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:26)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:94)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:49)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:79)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:53)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:74)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SkipEmptyWorkStep.lambda$execute$2(SkipEmptyWorkStep.java:78)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:78)

[2020-06-15T19:24:17.308Z] 	at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:34)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:39)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:40)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:28)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:33)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:194)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:186)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:114)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:62)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:409)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:399)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:157)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:242)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:150)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:94)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)

[2020-06-15T19:24:17.309Z] 	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:41)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:356)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)

[2020-06-15T19:24:17.309Z] 	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)

[2020-06-15T19:24:17.309Z] Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, position: Lkotlinx/coroutines/internal/MainDispatcherLoader;loadMainDispatcher()Lkotlinx/coroutines/MainCoroutineDispatcher;, origin: /mnt/jenkinsslave/gradle_home/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.3.7/8e2eb78158638b33793d204ffef0b65c4a578e1c/kotlinx-coroutines-core-1.3.7.jar:kotlinx/coroutines/internal/MainDispatcherLoader.class

[2020-06-15T19:24:17.309Z] 	at Version.fakeStackEntry(Version_master.java:0)

[2020-06-15T19:24:17.309Z] 	at com.android.tools.r8.utils.ExceptionUtils.failCompilation(ExceptionUtils.java:121)

[2020-06-15T19:24:17.309Z] 	at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:73)

[2020-06-15T19:24:17.309Z] 	at com.android.tools.r8.utils.ExceptionUtils.withR8CompilationHandler(ExceptionUtils.java:59)

[2020-06-15T19:24:17.309Z] 	at com.android.tools.r8.R8.runForTesting(R8.java:242)

[2020-06-15T19:24:17.309Z] 	at com.android.tools.r8.R8.run(R8.java:174)

[2020-06-15T19:24:17.309Z] 	at com.android.builder.dexing.R8Tool.runR8(r8Tool.kt:247)

[2020-06-15T19:24:17.309Z] 	at com.android.build.gradle.internal.tasks.R8Task$Companion.shrink(R8Task.kt:472)

[2020-06-15T19:24:17.309Z] 	at com.android.build.gradle.internal.tasks.R8Task.doTaskAction(R8Task.kt:334)

[2020-06-15T19:24:17.309Z] 	at com.android.build.gradle.internal.tasks.NonIncrementalTask$taskAction$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:74)

[2020-06-15T19:24:17.309Z] 	at com.android.build.gradle.internal.tasks.NonIncrementalTask$taskAction$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:34)

[2020-06-15T19:24:17.309Z] 	at com.android.build.gradle.internal.tasks.Blocks.recordSpan(Blocks.java:91)

[2020-06-15T19:24:17.309Z] 	at com.android.build.gradle.internal.tasks.NonIncrementalTask.taskAction(NonIncrementalTask.kt:57)

[2020-06-15T19:24:17.309Z] 	at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:104)

[2020-06-15T19:24:17.310Z] 	... 96 more

[2020-06-15T19:24:17.310Z] Caused by: java.lang.NullPointerException

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.graph.DexEncodedMethod.isStatic(DexEncodedMethod.java:442)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.analysis.ClassInitializationAnalysis$InstructionUtils.enqueueInitializedClassesOnNormalExit(ClassInitializationAnalysis.java:556)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.analysis.ClassInitializationAnalysis$InstructionUtils.isTypeInitializedBy(ClassInitializationAnalysis.java:531)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.analysis.ClassInitializationAnalysis$InstructionUtils.forInvokeStatic(ClassInitializationAnalysis.java:354)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.code.InvokeStatic.definitelyTriggersClassInitialization(InvokeStatic.java:160)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.analysis.ClassInitializationAnalysis.isClassDefinitelyLoadedBeforeInstruction(ClassInitializationAnalysis.java:127)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.optimize.DefaultInliningOracle.isTargetClassInitialized(DefaultInliningOracle.java:374)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.optimize.DefaultInliningOracle.computeForInvokeStatic(DefaultInliningOracle.java:334)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.code.InvokeStatic.computeInlining(InvokeStatic.java:143)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.optimize.DefaultInliningOracle.computeInlining(DefaultInliningOracle.java:289)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.optimize.Inliner.performInliningImpl(Inliner.java:990)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.optimize.Inliner.performInlining(Inliner.java:897)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.optimize.Inliner.performInlining(Inliner.java:870)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.conversion.IRConverter.optimize(IRConverter.java:1300)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.conversion.IRConverter.rewriteCodeInternal(IRConverter.java:1152)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.conversion.IRConverter.lambda$rewriteCode$15(IRConverter.java:1121)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.utils.ExceptionUtils.withOriginAndPositionAttachmentHandler(ExceptionUtils.java:220)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.conversion.IRConverter.rewriteCode(IRConverter.java:1118)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.conversion.IRConverter.processMethod(IRConverter.java:1097)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.conversion.IRConverter.lambda$optimize$7(IRConverter.java:709)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.ir.conversion.PrimaryMethodProcessor.lambda$forEachMethod$1(PrimaryMethodProcessor.java:137)

[2020-06-15T19:24:17.310Z] 	at com.android.tools.r8.utils.ThreadUtils.lambda$processItemsWithResults$2(ThreadUtils.java:51)

[2020-06-15T19:24:17.310Z] 	Suppressed: java.lang.RuntimeException: java.util.concurrent.ExecutionException: com.android.tools.r8.utils.ExceptionUtils$OriginAttachmentException: java.lang.NullPointerException

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.utils.ExceptionUtils.unwrapExecutionException(ExceptionUtils.java:195)

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.R8.run(R8.java:876)

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.R8.run(R8.java:255)

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.R8.lambda$runForTesting$1(R8.java:246)

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:70)

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.utils.ExceptionUtils.withR8CompilationHandler(ExceptionUtils.java:59)

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.R8.runForTesting(R8.java:242)

[2020-06-15T19:24:17.310Z] 		at com.android.tools.r8.R8.run(R8.java:174)

[2020-06-15T19:24:17.310Z] 		at com.android.builder.dexing.R8Tool.runR8(r8Tool.kt:247)

[2020-06-15T19:24:17.310Z] 		at com.android.build.gradle.internal.tasks.R8Task$Companion.shrink(R8Task.kt:472)

[2020-06-15T19:24:17.310Z] 		at com.android.build.gradle.internal.tasks.R8Task.doTaskAction(R8Task.kt:334)

[2020-06-15T19:24:17.310Z] 		at com.android.build.gradle.internal.tasks.NonIncrementalTask$taskAction$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:74)

[2020-06-15T19:24:17.310Z] 		at com.android.build.gradle.internal.tasks.NonIncrementalTask$taskAction$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:34)

[2020-06-15T19:24:17.310Z] 		at com.android.build.gradle.internal.tasks.Blocks.recordSpan(Blocks.java:91)

[2020-06-15T19:24:17.310Z] 		at com.android.build.gradle.internal.tasks.NonIncrementalTask.taskAction(NonIncrementalTask.kt:57)

[2020-06-15T19:24:17.310Z] 		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

[2020-06-15T19:24:17.310Z] 		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

[2020-06-15T19:24:17.310Z] 		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

[2020-06-15T19:24:17.310Z] 		at java.lang.reflect.Method.invoke(Method.java:498)

[2020-06-15T19:24:17.310Z] 		at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:104)

[2020-06-15T19:24:17.310Z] 		at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:49)

[2020-06-15T19:24:17.310Z] 		at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:42)

[2020-06-15T19:24:17.310Z] 		at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:28)

[2020-06-15T19:24:17.310Z] 		at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:726)

[2020-06-15T19:24:17.310Z] 		at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:693)

[2020-06-15T19:24:17.310Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$3.run(ExecuteActionsTaskExecuter.java:569)

[2020-06-15T19:24:17.310Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:395)

[2020-06-15T19:24:17.310Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:387)

[2020-06-15T19:24:17.310Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:157)

[2020-06-15T19:24:17.310Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:242)

[2020-06-15T19:24:17.310Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:150)

[2020-06-15T19:24:17.310Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:84)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)

[2020-06-15T19:24:17.311Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:554)

[2020-06-15T19:24:17.311Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:537)

[2020-06-15T19:24:17.311Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$300(ExecuteActionsTaskExecuter.java:108)

[2020-06-15T19:24:17.311Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.executeWithPreviousOutputFiles(ExecuteActionsTaskExecuter.java:278)

[2020-06-15T19:24:17.311Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:267)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ExecuteStep.lambda$execute$1(ExecuteStep.java:33)

[2020-06-15T19:24:17.311Z] 		at java.util.Optional.orElseGet(Optional.java:267)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:33)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:26)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:67)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:36)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:49)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:34)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:43)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:73)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:54)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CatchExceptionStep.execute(CatchExceptionStep.java:34)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:44)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:54)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:38)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:49)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CacheStep.executeWithoutCache(CacheStep.java:159)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CacheStep.executeAndStoreInCache(CacheStep.java:135)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CacheStep.lambda$executeWithCache$2(CacheStep.java:112)

[2020-06-15T19:24:17.311Z] 		at java.util.Optional.orElseGet(Optional.java:267)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CacheStep.lambda$executeWithCache$3(CacheStep.java:112)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.Try$Success.map(Try.java:162)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CacheStep.executeWithCache(CacheStep.java:81)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:71)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:43)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:44)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.StoreExecutionStateStep.execute(StoreExecutionStateStep.java:33)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:38)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:24)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:92)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:85)

[2020-06-15T19:24:17.311Z] 		at java.util.Optional.map(Optional.java:215)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:55)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:39)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:76)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:37)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:36)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:26)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:94)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:49)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:79)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.CaptureStateBeforeExecutionStep.execute(CaptureStateBeforeExecutionStep.java:53)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.ValidateStep.execute(ValidateStep.java:74)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SkipEmptyWorkStep.lambda$execute$2(SkipEmptyWorkStep.java:78)

[2020-06-15T19:24:17.311Z] 		at java.util.Optional.orElseGet(Optional.java:267)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:78)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.SkipEmptyWorkStep.execute(SkipEmptyWorkStep.java:34)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsStartedStep.execute(MarkSnapshottingInputsStartedStep.java:39)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:40)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.steps.LoadExecutionStateStep.execute(LoadExecutionStateStep.java:28)

[2020-06-15T19:24:17.311Z] 		at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:33)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:194)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:186)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:114)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:62)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:409)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:399)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:157)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:242)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:150)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:94)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)

[2020-06-15T19:24:17.312Z] 		at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:41)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:356)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)

[2020-06-15T19:24:17.312Z] 		at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)

[2020-06-15T19:24:17.312Z] 		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

[2020-06-15T19:24:17.312Z] 		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

[2020-06-15T19:24:17.312Z] 		at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)

[2020-06-15T19:24:17.312Z] 		at java.lang.Thread.run(Thread.java:748)

[2020-06-15T19:24:17.312Z] 	Caused by: java.util.concurrent.ExecutionException: com.android.tools.r8.utils.ExceptionUtils$OriginAttachmentException: java.lang.NullPointerException

[2020-06-15T19:24:17.312Z] 		at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1006)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.utils.ThreadUtils.awaitFuturesWithResults(ThreadUtils.java:138)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.utils.ThreadUtils.processItemsWithResults(ThreadUtils.java:53)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.utils.ThreadUtils.processItemsWithResults(ThreadUtils.java:32)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.ir.conversion.PrimaryMethodProcessor.forEachMethod(PrimaryMethodProcessor.java:134)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.ir.conversion.IRConverter.optimize(IRConverter.java:707)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.R8.run(R8.java:579)

[2020-06-15T19:24:17.312Z] 		... 121 more

[2020-06-15T19:24:17.312Z] 	Caused by: com.android.tools.r8.utils.ExceptionUtils$OriginAttachmentException: java.lang.NullPointerException

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.utils.ExceptionUtils$OriginAttachmentException.wrap(ExceptionUtils.java:232)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.utils.ExceptionUtils.withOriginAndPositionAttachmentHandler(ExceptionUtils.java:222)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.ir.conversion.IRConverter.rewriteCode(IRConverter.java:1118)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.ir.conversion.IRConverter.processMethod(IRConverter.java:1097)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.ir.conversion.IRConverter.lambda$optimize$7(IRConverter.java:709)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.ir.conversion.PrimaryMethodProcessor.lambda$forEachMethod$1(PrimaryMethodProcessor.java:137)

[2020-06-15T19:24:17.312Z] 		at com.android.tools.r8.utils.ThreadUtils.lambda$processItemsWithResults$2(ThreadUtils.java:51)

[2020-06-15T19:24:17.313Z] 		at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424)

[2020-06-15T19:24:17.313Z] 		at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)

[2020-06-15T19:24:17.313Z] 		at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)

[2020-06-15T19:24:17.313Z] 		at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)

[2020-06-15T19:24:17.313Z] 		at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

[2020-06-15T19:24:17.313Z] 	[CIRCULAR REFERENCE:java.lang.NullPointerException]

mk...@google.com <mk...@google.com> #25Jun 17, 2020 09:54AM

Filed b/159194018 to track the error reported at b/157681341#comment24

ze...@google.com <ze...@google.com> #26Jun 22, 2020 06:29PM

Status: pending roll to the studio development branch. Once rolled, the changes will be backported to the R8 2.1 branch and rolled to the 4.1 branch.

ze...@google.com <ze...@google.com> #27Jun 22, 2020 06:30PM

Zac: I'll ping you once the fix is on our 2.1 branch for trying out locally.

za...@gmail.com <za...@gmail.com> #28Jun 22, 2020 06:31PM

Thanks!

On Mon, Jun 22, 2020, 2:30 PM <buganizer-system@google.com> wrote:

- Show quoted text -

ap...@google.com <ap...@google.com> #29Jun 24, 2020 01:33PM

Project: r8
Branch: 2.1

commit 17317bda3fe7da697d542b6a03843626a3af4bb9
Author: Ian Zerny <zerny@google.com>
Date: Wed Jun 24 13:26:46 2020

Version 2.1.44

Cherry-pick: "Report unsupported based on desugared library version."
CL:

https://r8-review.googlesource.com/c/r8/+/52289

Cherry-pick: "Backwards compatible desugared library configuration."
CL:

https://r8-review.googlesource.com/c/r8/+/52241

Cherry-pick: "Update test expectation after error message change."
CL:

https://r8-review.googlesource.com/c/r8/+/52220

Cherry-pick: "Specify wrapper types in the desugared library configuration."
CL:

https://r8-review.googlesource.com/c/r8/+/52101

Cherry-pick: "Generate conversion wrappers in the desugared library."
CL:

https://r8-review.googlesource.com/c/r8/+/52042

Cherry-pick: "Test wrapper merging on all VMs and API levels."
CL:

https://r8-review.googlesource.com/c/r8/+/51859

Bug: 157681341
Bug: 158645207
Change-Id: If2c471396179dfd99e18b2f36b8a513cbae12ac4

M .gitignore
M build.gradle
M src/main/java/com/android/tools/r8/GenerateLintFiles.java
M src/main/java/com/android/tools/r8/L8.java
M src/main/java/com/android/tools/r8/Version.java
M src/main/java/com/android/tools/r8/dex/ApplicationReader.java
M src/main/java/com/android/tools/r8/dex/CodeToKeep.java
M src/main/java/com/android/tools/r8/graph/LazyLoadedDexApplication.java
M src/main/java/com/android/tools/r8/graph/analysis/DesugaredLibraryConversionWrapperAnalysis.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryAPIConverter.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryConfiguration.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryConfigurationParser.java
M src/main/java/com/android/tools/r8/ir/desugar/DesugaredLibraryWrapperSynthesizer.java
M src/main/java/com/android/tools/r8/shaking/Enqueuer.java
M src/main/java/com/android/tools/r8/utils/AndroidApp.java
A src/main/java/com/android/tools/r8/utils/SemanticVersion.java
M src/test/java/com/android/tools/r8/DiagnosticsMatcher.java
M src/test/java/com/android/tools/r8/JvmTestBuilder.java
A src/test/java/com/android/tools/r8/PositionMatcher.java
M src/test/java/com/android/tools/r8/TestCompileResult.java
M src/test/java/com/android/tools/r8/TestCompilerBuilder.java
A src/test/java/com/android/tools/r8/desugar/desugaredlibrary/BackwardsCompatibleSpecificationTest.java
A src/test/java/com/android/tools/r8/desugar/desugaredlibrary/DesugaredLibaryChecksumsTest.java
A src/test/java/com/android/tools/r8/desugar/desugaredlibrary/DesugaredLibraryConfigurationParsingTest.java
A src/test/java/com/android/tools/r8/desugar/desugaredlibrary/ExtractWrapperTypesTest.java
M src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/APIConversionTest.java
M src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/ClockAPIConversionTest.java
M src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/FunctionConversionTest.java
D src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/WrapperMergeTest.java
A src/test/java/com/android/tools/r8/desugar/desugaredlibrary/conversiontests/WrapperPlacementTest.java
A src/test/java/com/android/tools/r8/testing/AndroidBuildVersion.java
A src/test/java/com/android/tools/r8/utils/SemanticVersionTests.java
A third_party/r8-releases/2.0.74.tar.gz.sha1

https://r8-review.googlesource.com/52300

ze...@google.com <ze...@google.com> #30Jun 24, 2020 05:44PM

Version 2.1.44 has landed and should resolve this issue. Could you verify on your end Zac?

FYI, there is currently no plan to backport support for this to the APG 4.0 branch as it fairly large.

zs...@salesforce.com <zs...@salesforce.com> #31Jun 24, 2020 08:30PM

Just tried this but we still get the same crashes unfortunately :(

zs...@salesforce.com <zs...@salesforce.com> #32Jun 25, 2020 04:48AM

Well maybe not. I just checked the output mapping file and it seems to still be using an older version of R8. Let me try to get to the bottom of it and will report back

ze...@google.com <ze...@google.com> #33Jun 25, 2020 05:25AM

Are these the same runtime issues that you had in the original report? Could you confirm the D8/R8 versions of the APK using extractmarker?

I can't build the repro project at the checkout I used previously, so I'll try updating to the tip of tree if that is what you are reproducing at?

FYI, I get:

Task :libraries:smmry:kaptReleaseKotlin FAILED
/usr/local/google/home/zerny/ssd/r8-bugs/157681341/CatchUp/libraries/smmry/src/main/kotlin/io/sweers/catchup/smmry/SmmryModule.kt:36: error: incompatible types: NonExistentClass cannot be converted to Annotation
@InstallIn(FragmentComponent::class)
^
FAILURE: Build failed with an exception.

running ./gradlew :app:assembleDebug which used to work and repro the issue.

zs...@salesforce.com <zs...@salesforce.com> #34Jun 25, 2020 04:33PM

Closing the loop here for those following, we talked more offline and identified a related issue that's now tracked here - https://issuetracker.google.com/issues/159871229

ze...@google.com <ze...@google.com> #35Jun 29, 2020 06:48PM

Marked as fixed.

As noted in

b/159871229

, the fix will be shipped in 4.1.0-beta04, and in 4.2.0-alpha05.

zs...@salesforce.com <zs...@salesforce.com> #36Jul 22, 2020 12:42AM

I've tried this with both 4.1.0-beta04 and 4.2.0-alpha05 and it is still occurring :/. Slightly different error now though

java.lang.NoSuchMethodError: No direct method <init>(Ljava/util/Map;)V in class Lj$/util/m; or its super classes (declaration of 'j$.util.m' appears in /data/app/com.Slack.test-N8ok9kngoWUpMTt_roYrFA==/base.apk!classes2.dex)
	at j$.util.DesugarCollections.synchronizedMap(Unknown Source:2)
	at slack.telemetry.helper.FrameMetricsPlugin.<init>(FrameMetricsPlugin.kt:3)
	at slack.telemetry.helper.FrameMetricsPlugin_Factory.get(FrameMetricsPlugin_Factory.java:2)
	at dagger.internal.DoubleCheck.get(DoubleCheck.java:5)
	at slack.telemetry.helper.TracePluginsFactoryImpl_Factory.get(TracePluginsFactoryImpl_Factory.java:1)
	at dagger.internal.DoubleCheck.get(DoubleCheck.java:5)
	at slack.telemetry.TraceProviderImpl_Factory.get(TraceProviderImpl_Factory.java:1)
	at dagger.internal.DoubleCheck.get(DoubleCheck.java:5)
	at slack.telemetry.TracerImpl_Factory.get(TracerImpl_Factory.java:1)
	at dagger.internal.DoubleCheck.get(DoubleCheck.java:5)

zs...@salesforce.com <zs...@salesforce.com> #37Jul 23, 2020 11:33PM

Closing the loop - #36 was another issue with use in androidTest apks https://issuetracker.google.com/issues/158018485

za...@gmail.com <za...@gmail.com> #38Aug 8, 2020 09:01PM

Another thing I've found is that Studio expects libraries to enable core library desugaring, or else it lints their usage as errors. I've filed this issue for that: https://issuetracker.google.com/issues/163100585