java.lang.RuntimeException: Annotation processors must be explicitly declared now.

Android Studio升级到最新版3.0 Canary 8后，当使用到注解时，报了如下错误：
Error:Execution failed for task ':app:javaPreCompileDebug'.
> Annotation processors must be explicitly declared now.  The following dependencies on the compile classpath are found to contain annotation processor.  Please add them to the annotationProcessor configuration

解决办法：在Gradle中添加如下代码

android {
    ...
    
    defaultConfig {
        ...

        javaCompileOptions { 
            annotationProcessorOptions { 
                includeCompileClasspath = true 
            } 
        }
    }
    
    ...
}

且保证多module只有一个依赖了butterknife注解库