Warning "Kotlin plugin version is not the same as library version" (but it is!) : <p>I have an Android studio project in which I have added a Java library module, which I call <code>core</code>. My three Gradle build files look like this.</p>



<p>project/build.gradle</p>

<pre class="lang-gradle prettyprint-override"><code>buildscript {
    ext.kotlin_version = '1.2.40'
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}
</code></pre>

<p>core/build.gradle</p>

<pre class="lang-gradle prettyprint-override"><code>apply plugin: 'java-library'
apply plugin: 'kotlin'

dependencies { 
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7"
    ...
}
</code></pre>

<p>app/build.gradle</p>

<pre class="lang-gradle prettyprint-override"><code>apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'

android { ... }

dependencies {
    implementation project(':core')
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
    implementation 'com.android.support:appcompat-v7:27.1.1'

    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    testImplementation 'junit:junit:4.12'
}
</code></pre>

<p>The problem I have is that, in <code>core/build.gradle</code>, the <code>kotlin-stdlib-jdk7</code> line is giving me the warning <code>Plugin version (1.2.40) is not the same as library version (jdk7-1.2.40)</code>. I have tried changing it to:</p>

<p><code>implementation "org.jetbrains.kotlin:kotlin-stdlib"</code></p>

<p><code>implementation "org.jetbrains.kotlin:kotlin-stdlib:1.2.40"</code></p>

<p><code>implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.2.40"</code></p>

<p><code>implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"</code></p>

<p><code>implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"</code></p>

<p>But the warning is still there. The build still runs successfully, and I know I can surpress the warning without any problems and ignore it, but I really want to know why this is happening and how I can get rid of it. I am using Android Studio 3.0.1. Does anyone know of a solution to this?</p>
