Butterknife: a gradle task error work with butterknife

[Jan9th]

My Android Studio version is 2.3.1 while the JDK is the newest version 8u121。

the error is following ：
Error:org.gradle.api.internal.tasks.compile.CompilationFailedException: Compilation failed; see the compiler error output for details.

In another project without the config it work well，the config is following：
compile 'com.jakewharton:butterknife:8.5.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'

There is no more info with it ， the stacktrace/debug config is

[Jan9th]

and

[Jan9th]

Error:13:50:39.259 [ERROR] [system.err] 错误: 服务配置文件不正确, 或构造处理程序对象javax.annotation.processing.Processor: Provider butterknife.compiler.ButterKnifeProcessor could not be instantiated: java.lang.NoSuchMethodError: com.squareup.javapoet.CodeBlock.of(Ljava/lang/String;[Ljava/lang/Object;)Lcom/squareup/javapoet/CodeBlock;时抛出异常错误
13:50:39.277 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
13:50:39.277 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] FAILURE: Build failed with an exception.
13:50:39.277 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
13:50:39.278 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * What went wrong:
13:50:39.278 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Execution failed for task ':app:compileDebugJavaWithJavac'.
13:50:39.278 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] > Compilation failed; see the compiler error output for details.
13:50:39.278 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]
13:50:39.278 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Exception is:
13:50:39.279 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:compileDebugJavaWithJavac'.
13:50:39.279 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:84)
13:50:39.279 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:55)
13:50:39.279 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
13:50:39.280 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
13:50:39.280 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88)
13:50:39.280 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:46)
13:50:39.280 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:51)
13:50:39.280 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
13:50:39.281 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
13:50:39.281 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
13:50:39.281 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.execute(DefaultTaskGraphExecuter.java:236)
13:50:39.281 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.execute(DefaultTaskGraphExecuter.java:228)
13:50:39.282 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.Transformers$4.transform(Transformers.java:169)
13:50:39.282 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106)
13:50:39.282 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:61)
13:50:39.282 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:228)
13:50:39.282 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:215)
13:50:39.282 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:77)
13:50:39.283 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:58)
13:50:39.283 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.ParallelTaskPlanExecutor.process(ParallelTaskPlanExecutor.java:50)
13:50:39.283 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:113)
13:50:39.283 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
13:50:39.283 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
13:50:39.284 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
13:50:39.284 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
13:50:39.284 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
13:50:39.284 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
13:50:39.284 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
13:50:39.284 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher$3.execute(DefaultGradleLauncher.java:196)
13:50:39.285 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher$3.execute(DefaultGradleLauncher.java:193)
13:50:39.285 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.Transformers$4.transform(Transformers.java:169)
13:50:39.285 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106)
13:50:39.285 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:56)
13:50:39.285 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:193)
13:50:39.286 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:119)
13:50:39.286 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:102)
13:50:39.286 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.GradleBuildController.run(GradleBuildController.java:71)
13:50:39.286 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:50)
13:50:39.286 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
13:50:39.287 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.runner.RunAsBuildOperationBuildActionRunner$1.execute(RunAsBuildOperationBuildActionRunner.java:43)
13:50:39.287 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.runner.RunAsBuildOperationBuildActionRunner$1.execute(RunAsBuildOperationBuildActionRunner.java:40)
13:50:39.288 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.Transformers$4.transform(Transformers.java:169)
13:50:39.288 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106)
13:50:39.288 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:56)
13:50:39.288 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.runner.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:40)
13:50:39.289 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:75)
13:50:39.289 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
13:50:39.290 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:41)
13:50:39.290 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
13:50:39.290 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:75)
13:50:39.292 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:49)
13:50:39.292 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:44)
13:50:39.292 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:29)
13:50:39.292 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67)
13:50:39.292 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
13:50:39.293 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.293 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:47)
13:50:39.293 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.293 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
13:50:39.293 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.294 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
13:50:39.294 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.294 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
13:50:39.294 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
13:50:39.294 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.util.Swapper.swap(Swapper.java:38)
13:50:39.294 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
13:50:39.295 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.295 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
13:50:39.295 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.295 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
13:50:39.295 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
13:50:39.296 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.296 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
13:50:39.296 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
13:50:39.296 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
13:50:39.296 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
13:50:39.296 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:297)
13:50:39.297 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
13:50:39.297 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
13:50:39.297 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: org.gradle.api.internal.tasks.compile.CompilationFailedException: Compilation failed; see the compiler error output for details.
13:50:39.301 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:48)
13:50:39.302 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:33)
13:50:39.302 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:104)
13:50:39.302 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:53)
13:50:39.302 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:38)
13:50:39.302 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:35)
13:50:39.303 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:25)
13:50:39.303 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:206)
13:50:39.303 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:187)
13:50:39.303 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:130)
13:50:39.303 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.tasks.factory.AndroidJavaCompile.compile(AndroidJavaCompile.java:49)
13:50:39.303 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
13:50:39.304 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$IncrementalTaskAction.doExecute(DefaultTaskClassInfoStore.java:163)
13:50:39.304 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134)
13:50:39.304 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:123)
13:50:39.306 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:95)
13:50:39.306 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:76)
13:50:39.306 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] ... 78 more
13:50:39.306 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter]

[Jan9th]

Have looking #727 ， I donnot know what is JavaPoet ，I didn't use JavaPoet。
After comparing with #713，it doesnot work after add an explicit dependency on the latest version of JavaPoet (1.7.0 or 1.8.0）as a classpath dependency in the buildscript to work around it.

Is it still a bug of ..... ?

[Jan9th]

without rely on
annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1' ，
following works well ：
compile 'com.jakewharton:butterknife:8.5.1'
compile 'io.reactivex.rxjava2:rxjava:2.0.8'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
compile 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'
compile 'com.squareup.retrofit2:converter-gson:2.2.0'

while
compile 'com.jakewharton:butterknife:8.5.1' works well with
annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'

[JakeWharton]

This error indicates your build system is pulling in a version of JavaPoet onto the annotation processor classpath which is older than the version that Butter Knife declares. This is not a problem with Butter Knife, but of your build system configuration. You can use the dependencies task to try and narrow down which other plugin or annotation processor is the problem, but it's hard to know without more information. There's no specific action for Butter Knife to take here though.