这是我的错误信息：
Unexpected error while performing partial evaluation:
Class = [org/apache/log4j/chainsaw/Main]
Method = [<init>()V]
Exception = [java.lang.IllegalArgumentException] (Can't find common super class of [java/lang/NoClassDefFoundError] (with 5 known super classes) and [org/apache/log4j/chainsaw/LoadXMLAction] (with 1 known super classes))
Exception while processing task
java.lang.IllegalArgumentException: Can't find common super class of [java/lang/NoClassDefFoundError] (with 5 known super classes) and [org/apache/log4j/chainsaw/LoadXMLAction] (with 1 known super classes)
at proguard.evaluation.value.TypedReferenceValue.findCommonClass(TypedReferenceValue.java:441)
at proguard.evaluation.value.TypedReferenceValue.generalize(TypedReferenceValue.java:277)
at proguard.evaluation.value.TypedReferenceValue.generalize(TypedReferenceValue.java:201)
at proguard.evaluation.value.ReferenceValue.generalize(ReferenceValue.java:298)
at proguard.evaluation.Variables.generalize(Variables.java:136)
at proguard.evaluation.TracedVariables.generalize(TracedVariables.java:118)
at proguard.optimize.evaluation.PartialEvaluator.evaluateSingleInstructionBlock(PartialEvaluator.java:690)
at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlock(PartialEvaluator.java:594)
at proguard.optimize.evaluation.PartialEvaluator.visitExceptionInfo(PartialEvaluator.java:1079)
at proguard.classfile.visitor.ExceptionHandlerFilter.visitExceptionInfo(ExceptionHandlerFilter.java:67)
at proguard.classfile.attribute.CodeAttribute.exceptionsAccept(CodeAttribute.java:186)
at proguard.optimize.evaluation.PartialEvaluator.evaluateExceptionHandlers(PartialEvaluator.java:1019)
at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlockAndExceptionHandlers(PartialEvaluator.java:574)
at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute0(PartialEvaluator.java:271)
at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute(PartialEvaluator.java:188)
at proguard.classfile.attribute.CodeAttribute.accept(CodeAttribute.java:101)
at proguard.classfile.ProgramMethod.attributesAccept(ProgramMethod.java:81)
at proguard.classfile.attribute.visitor.AllAttributeVisitor.visitProgramMember(AllAttributeVisitor.java:95)
at proguard.classfile.util.SimplifiedVisitor.visitProgramMethod(SimplifiedVisitor.java:92)
at proguard.classfile.ProgramMethod.accept(ProgramMethod.java:73)
at proguard.classfile.ProgramClass.methodsAccept(ProgramClass.java:516)
at proguard.classfile.visitor.AllMethodVisitor.visitProgramClass(AllMethodVisitor.java:47)
at proguard.classfile.visitor.ClassAccessFilter.visitProgramClass(ClassAccessFilter.java:67)
at proguard.classfile.ProgramClass.accept(ProgramClass.java:358)
at proguard.classfile.ClassPool.classesAccept(ClassPool.java:124)
at proguard.optimize.Optimizer.execute(Optimizer.java:462)
at proguard.ProGuard.optimize(ProGuard.java:328)
at proguard.ProGuard.execute(ProGuard.java:127)
at proguard.gradle.ProGuardTask.proguard(ProGuardTask.java:1074)
at com.android.build.gradle.tasks.AndroidProGuardTask.doMinification(AndroidProGuardTask.java:139)
at com.android.build.gradle.tasks.AndroidProGuardTask$1.run(AndroidProGuardTask.java:115)
at com.android.builder.tasks.Job.runTask(Job.java:48)
at com.android.build.gradle.tasks.SimpleWorkQueue$EmptyThreadContext.runTask(SimpleWorkQueue.java:41)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:227)
at java.lang.Thread.run(Thread.java:745)
:mainAPlication:shrinkReleaseMultiDexComponents FAILED
如果我设置minifyEnabled true这个错误出现了，如果我设置minifyEnabled flase，我的任务进展顺利
这是我的proguard.cfg文件：
-optimizationpasses 1
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-dontshrink
-verbose
-microedition
-ignorewarnings
-keepattributes InnerClasses,Signature
-keepattributes *Annotation*
所以，我不知道这个错误是怎么发生的，这看起来是因为minifyEnabled工作错误，有人会遇到同样的问题吗。
当我在proguard.cfg中添加这一行时，我的构建工作于
-dontoptimize
但我不知道是什么原因导致错误
它可能是一个外部库我挖了这个http://sohu.io/questions/1918042/proguard-cant-find-any-super-classes毫无疑问，沿着这些路线，我有一个类似的场景：
由于编译了一个包含Log4J的库，Proguard无法生成。让该库的所有者删除log4j并调用它是我要采取的方法。特别是在生产方面，proguard确实应该在生产/发布场景中使用。。。