Upgrading Android kotlin version to 1.5.0 throwing error message on build

Question

Running with kotlin version '1.4.32' my Android project runs and builds. Trying to upgrade to kotlin '1.5.0' and my build throws:

Execution failed for task ':app:kaptDefaultsDebugKotlin'. > A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptWithoutKotlincTask$KaptExecutionWorkAction    > java.lang.reflect.InvocationTargetException (no error message) 

I am not even sure where to start looking. Anyone else have problems upgrading to kotlin 1.5.0?

Answer 1

I experienced the same issue today. Ran the gradle build command with --stacktrace and got a helpful stacktrace which narrowed down the issue to Moshi library.

Caused by: java.lang.IllegalStateException: Could not parse metadata! This should only happen if you're using Kotlin <1.1.     at com.squareup.moshi.kotlinpoet.metadata.KotlinPoetMetadata.readKotlinClassMetadata(KotlinPoetMetadata.kt:70)     at com.squareup.moshi.kotlinpoet.metadata.KotlinPoetMetadata.toImmutableKmClass(KotlinPoetMetadata.kt:50)     at com.squareup.moshi.kotlin.codegen.MoshiCachedClassInspector.toImmutableKmClass(MoshiCachedClassInspector.kt:22)     at com.squareup.moshi.kotlin.codegen.MetadataKt.targetType(metadata.kt:109)     at com.squareup.moshi.kotlin.codegen.JsonClassCodegenProcessor.adapterGenerator(JsonClassCodegenProcessor.kt:136)     at com.squareup.moshi.kotlin.codegen.JsonClassCodegenProcessor.process(JsonClassCodegenProcessor.kt:110)     at org.jetbrains.kotlin.kapt3.base.incremental.IncrementalProcessor.process(incrementalProcessors.kt:90)     at org.jetbrains.kotlin.kapt3.base.ProcessorWrapper.process(annotationProcessing.kt:175)     at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:980)     ... 41 more 

Had to update Moshi to 1.12.0 and that did the trick.

Here's a changelog for Moshi 1.12.0 that mentions the fix for 1.5.0: https://github.com/square/moshi/blob/master/CHANGELOG.md#version-1120

Issue when it was first reported here: https://github.com/square/moshi/issues/1324

Another issue which mentions the fix here: https://github.com/square/moshi/issues/1337

So I'd suggest you run gradle build command with --stacktrace and figure out which library causes the incompatibility with the kotlinx-metadata-jvm library and update it.

Answer 2

This is due to Dagger's use of older version of kotlinx-metadata-jvm. See https://youtrack.jetbrains.com/issue/KT-45885

Update your dagger to 2.34