Unable to delete old javaCompile action, maybe the class name has changed

I am learning RxJava. For that i followed droidcon talk video on RxJava. The instructor has given repo link for the project he was using. I cloned the repo when i try to build project in my machine. I get this error Error:Unable to delete old javaCompile action, maybe the class name has changed? Please submit a bug report with what version of gradle you are using. Here is gradle.build file ``` buildscript { repositories { mavenCentral() } dependencies { classpath 'me.tatarka:gradle-retrolambda:2.5.0' } } repositories { mavenCentral() maven { url "https://github.com/alter-ego/advanced-android-logger/raw/develop/releases/" } } apply plugin: 'retrolambda' apply plugin: 'com.android.application' android { compileSdkVersion 23 buildToolsVersion "25.0.0" defaultConfig { applicationId "com.packtpub.apps.rxjava_essentials" minSdkVersion 16 targetSdkVersion 22 versionCode 1 versionName "1.0" jackOptions { enabled true } } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } lintOptions { disable 'InvalidPackage' abortOnError false } packagingOptions { exclude 'META-INF/services/javax.annotation.processing.Processor' } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:support-v4:23.1.1' compile "com.android.support:appcompat-v7:23.1.1" compile 'com.android.support:recyclerview-v7:23.1.1' compile 'com.android.support:cardview-v7:23.1.1' compile 'com.jakewharton.timber:timber:4.1.0' compile 'org.projectlombok:lombok:1.14.8' compile 'com.jakewharton:butterknife:6.0.0' compile 'io.reactivex:rxandroid:1.1.0' compile 'io.reactivex:rxjava:1.1.0' compile 'io.reactivex:rxjava-joins:0.22.0' compile 'com.google.guava:guava:18.0' compile 'com.google.code.gson:gson:2.4' compile 'com.github.lzyzsd:circleprogress:1.1.0@aar' compile 'com.github.rey5137:material:1.0.0' compile 'com.squareup.retrofit:retrofit:1.9.0' compile 'com.squareup.okhttp:okhttp-urlconnection:2.0.0' compile 'com.squareup.okhttp:okhttp:2.0.0' compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.3' } ``` Any idea how can i fix this issue?