Android Desugaring breaks serializating with NoClassDefFoundError

Describe the bug When serializing with ObjectMapper#writeValueAsString() (and possibly other serialization methods) when Android’s new desugaring feature is enabled (coreLibraryDesugaringEnabled true), there’s a NoClassDefFoundError for java.util.function.Consumer. This does not occur when android’s desugaring is disabled.

Stacktrace:

java.lang.NoClassDefFoundError: java.util.function.Consumer
        at libcore.reflect.InternalNames.getClass(InternalNames.java:55)
        at java.lang.Class.getDexCacheType(Class.java:479)
        at java.lang.reflect.ArtMethod.getDexCacheType(ArtMethod.java:236)
        at java.lang.reflect.ArtMethod.getParameterTypes(ArtMethod.java:176)
        at java.lang.reflect.Method.getParameterTypes(Method.java:174)
        at java.lang.Class.getDeclaredMethods(Class.java:802)
        at com.fasterxml.jackson.databind.util.ClassUtil.getClassMethods(ClassUtil.java:1172)
        at com.fasterxml.jackson.databind.introspect.AnnotatedMethodCollector._addMemberMethods(AnnotatedMethodCollector.java:117)
        at com.fasterxml.jackson.databind.introspect.AnnotatedMethodCollector.collect(AnnotatedMethodCollector.java:49)
        at com.fasterxml.jackson.databind.introspect.AnnotatedMethodCollector.collectMethods(AnnotatedMethodCollector.java:40)
        at com.fasterxml.jackson.databind.introspect.AnnotatedClass._methods(AnnotatedClass.java:382)
        at com.fasterxml.jackson.databind.introspect.AnnotatedClass.memberMethods(AnnotatedClass.java:322)
        at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector._addMethods(POJOPropertiesCollector.java:555)
        at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.collectAll(POJOPropertiesCollector.java:323)
        at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.getJsonValueAccessor(POJOPropertiesCollector.java:203)
        at com.fasterxml.jackson.databind.introspect.BasicBeanDescription.findJsonValueAccessor(BasicBeanDescription.java:252)
        at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.findSerializerByAnnotations(BasicSerializerFactory.java:396)
        at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.buildCollectionSerializer(BasicSerializerFactory.java:704)
        at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.buildContainerSerializer(BasicSerializerFactory.java:646)
        at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:196)
        at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:165)
        at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:1474)
        at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1442)
        at com.fasterxml.jackson.databind.SerializerProvider.findPrimaryPropertySerializer(SerializerProvider.java:652)
        at com.fasterxml.jackson.databind.ser.impl.PropertySerializerMap.findAndAddPrimarySerializer(PropertySerializerMap.java:72)
        at com.fasterxml.jackson.databind.ser.BeanPropertyWriter._findAndAddDynamic(BeanPropertyWriter.java:896)
        at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:706)
        at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
        at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
        at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
        at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
        at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
        at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContentsUsing(CollectionSerializer.java:171)
        at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:116)
        at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serialize(CollectionSerializer.java:107)
        at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serialize(CollectionSerializer.java:25)
        at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
        at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
        at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
        at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
        at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
        at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:4374)
        at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:3629)
        at me.retrodaredevil.solarthing.android.prefs.saving.JacksonProfileHolder.getProfile(JacksonProfileHolder.kt:21)
        at me.retrodaredevil.solarthing.android.prefs.saving.BasicProfileManager.getActiveUUID(BasicProfileManager.kt:50)
        at me.retrodaredevil.solarthing.android.activity.ProfileHeaderHandler.<init>(ProfileHeaderHandler.kt:30)
        at me.retrodaredevil.solarthing.android.activity.SettingsActivity.onCreate(SettingsActivity.kt:83)
        at android.app.Activity.performCreate(Activity.java:6288)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
        at android.app.ActivityThread.access$900(ActivityThread.java:177)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:145)
        at android.app.ActivityThread.main(ActivityThread.java:5942)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "java.util.function.Consumer" on path: DexPathList[[zip file "/data/app/me.retrodaredevil.solarthing.android-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
        at libcore.reflect.InternalNames.getClass(InternalNames.java:53)
    	... 59 more
    	Suppressed: java.lang.ClassNotFoundException: java.util.function.Consumer
W/System.err:     at java.lang.Class.classForName(Native Method)
        at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
        at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
    		... 61 more
    	Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

To Reproduce Enable Android’s desugaring and try to serialize something on an older phone (this error doesn’t happen on newer phones)

Expected behavior Enabling desugaring should not break Jackson serialization.

Versions Kotlin: 1.3.72 Jackson-module-kotlin: 2.11.0, 2.11.1 Jackson-databind: 2.11.0, 2.11.1, 2.11.2-SNAPSHOT

Additional context If I disable Android’s desugaring, this error goes away. If you need more information, I’m happy to provide the class which I tried to serialize or the properties of the ObjectMapper. The objects I’m trying to serialize involve a few nested objects with generics, so posting the classes being serialized would involve posting a lot of classes. This is using Kotlin, but I don’t believe that the Jackson-module-kotlin is causing this.

I don’t really understand why Jackson feels the need to try and find the Consumer interface just because it might exist. I’d like to enable Android’s new desugaring features but I don’t really understand why this exception seems to be a side effect of doing that.

[vn01971]

I’m still having the issue with com.fasterxml.jackson.core:jackson-databind:2.11.4 on Android API 21 devices with desugaring enabled.

com.applitools.eyes.android.common.exceptions.EyesException: Failed to connect to server 
     FATAL EXCEPTION: Thread-461
com.applitools.eyes.android.common.exceptions.EyesException: Failed to connect to server 
	at com.applitools.eyes.android.common.network.RestClient$1.run(RestClient.java:112)
	at java.lang.Thread.run(Thread.java:818)
Caused by: com.fasterxml.jackson.databind.JsonMappingException: Failed on call to `getDeclaredMethods()` on class `com.applitools.eyes.android.common.Properties`,
problem: (java.lang.NoClassDefFoundError) java.util.function.Consumer (through reference chain:
com.applitools.eyes.android.common.SessionStartInfoBody["startInfo"]->com.applitools.eyes.android.common.SessionStartInfo["properties"])
	at com.fasterxml.jackson.databind.SerializerProvider.reportMappingProblem(SerializerProvider.java:1309)
	at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1447)
	at com.fasterxml.jackson.databind.SerializerProvider.findPrimaryPropertySerializer(SerializerProvider.java:652)
	at com.fasterxml.jackson.databind.ser.impl.PropertySerializerMap.findAndAddPrimarySerializer(PropertySerializerMap.java:72)
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter._findAndAddDynamic(BeanPropertyWriter.java:896)
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:706)
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
	at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
	at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
	at com.fasterxml.jackson.databind.ObjectMapper._writeValueAndClose(ObjectMapper.java:4409)
	at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:3663)
	at com.applitools.eyes.android.common.network.RestClient$1.run(RestClient.java:97)
	... 1 more

[cramptonism]

Also experiencing this issue after enabling coreLibraryDesugaringEnabled. Thanks for the detailed report.