title: Gradle 3.0.0-beta1 build issue
body: <p>I just updated the gradle version to</p>
  
  <pre><code>classpath 'com.android.tools.build:gradle:3.0.0-beta1'
  </code></pre>
  
  <p>after updating android studio to 3.0-beta1, and my gradle-wrapper is:</p>
  
  <pre><code>distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-rc-1-all.zip
  </code></pre>
  
  <p>the problem is I'm facing this weird issue when I want to Gradle-sync the project:</p>
  
  <pre><code>Error:Cause: java.lang.NullPointerException
  at sun.nio.fs.UnixPath.normalizeAndCheck(UnixPath.java:77)
  at sun.nio.fs.UnixPath.&lt;init&gt;(UnixPath.java:71)
  at sun.nio.fs.UnixFileSystem.getPath(UnixFileSystem.java:281)
  at java.nio.file.Paths.get(Paths.java:84)
  at com.android.build.gradle.internal.scope.BuildOutput.getOutputPath(BuildOutput.java:222)
  at com.android.build.gradle.internal.scope.BuildOutputs.lambda$load$2(BuildOutputs.java:243)
  at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
  at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1376)
  at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
  at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
  at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
  at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
  at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
  at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:245)
  at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:184)
  at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:140)
  at com.android.build.gradle.internal.ide.BuildOutputsSupplier.lambda$get$1(BuildOutputsSupplier.java:55)
  at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:397)
  at com.android.build.gradle.internal.ide.BuildOutputsSupplier.get(BuildOutputsSupplier.java:50)
  at com.android.build.gradle.internal.ide.BuildOutputsSupplier.get(BuildOutputsSupplier.java:35)
  at com.android.build.gradle.internal.ide.AndroidArtifactImpl.getOutputs(AndroidArtifactImpl.java:134)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$ReflectionMethodInvoker.invoke(ProtocolToModelAdapter.java:592)
  at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$AdaptingMethodInvoker.invoke(ProtocolToModelAdapter.java:397)
  at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$PropertyCachingMethodInvoker.invoke(ProtocolToModelAdapter.java:625)
  at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$SafeMethodInvoker.invoke(ProtocolToModelAdapter.java:647)
  at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$SupportedPropertyInvoker.invoke(ProtocolToModelAdapter.java:670)
  at org.gradle.tooling.internal.adapter.ProtocolToModelAdapter$InvocationHandlerImpl.invoke(ProtocolToModelAdapter.java:356)
  at com.sun.proxy.$Proxy204.getOutputs(Unknown Source)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeAndroidArtifactImpl.&lt;init&gt;(IdeAndroidArtifactImpl.java:57)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeVariantImpl.lambda$new$1(IdeVariantImpl.java:63)
  at com.android.tools.idea.gradle.project.model.ide.android.ModelCache.lambda$computeIfAbsent$0(ModelCache.java:31)
  at java.util.HashMap.computeIfAbsent(HashMap.java:1126)
  at com.android.tools.idea.gradle.project.model.ide.android.ModelCache.computeIfAbsent(ModelCache.java:31)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeModel.copy(IdeModel.java:74)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeVariantImpl.&lt;init&gt;(IdeVariantImpl.java:62)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeAndroidProjectImpl.lambda$new$4(IdeAndroidProjectImpl.java:88)
  at com.android.tools.idea.gradle.project.model.ide.android.ModelCache.lambda$computeIfAbsent$0(ModelCache.java:31)
  at java.util.HashMap.computeIfAbsent(HashMap.java:1126)
  at com.android.tools.idea.gradle.project.model.ide.android.ModelCache.computeIfAbsent(ModelCache.java:31)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeModel.copy(IdeModel.java:74)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeAndroidProjectImpl.&lt;init&gt;(IdeAndroidProjectImpl.java:87)
  at com.android.tools.idea.gradle.project.model.ide.android.IdeAndroidProjectImpl.&lt;init&gt;(IdeAndroidProjectImpl.java:68)
  at com.android.tools.idea.gradle.project.model.AndroidModuleModel.&lt;init&gt;(AndroidModuleModel.java:131)
  at com.android.tools.idea.gradle.project.sync.idea.AndroidGradleProjectResolver.populateModuleContentRoots(AndroidGradleProjectResolver.java:214)
  at org.jetbrains.plugins.gradle.service.project.AbstractProjectResolverExtension.populateModuleContentRoots(AbstractProjectResolverExtension.java:103)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.doResolveProjectInfo(GradleProjectResolver.java:366)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.access$200(GradleProjectResolver.java:79)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:902)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver$ProjectConnectionDataNodeFunction.fun(GradleProjectResolver.java:886)
  at org.jetbrains.plugins.gradle.service.execution.GradleExecutionHelper.execute(GradleExecutionHelper.java:218)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:139)
  at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:79)
  at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.lambda$resolveProjectInfo$0(RemoteExternalSystemProjectResolverImpl.java:37)
  at com.intellij.openapi.externalSystem.service.remote.AbstractRemoteExternalSystemService.execute(AbstractRemoteExternalSystemService.java:59)
  at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.resolveProjectInfo(RemoteExternalSystemProjectResolverImpl.java:37)
  at com.intellij.openapi.externalSystem.service.remote.wrapper.ExternalSystemProjectResolverWrapper.resolveProjectInfo(ExternalSystemProjectResolverWrapper.java:45)
  at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:66)
  at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:139)
  at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:125)
  at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:388)
  at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$5.run(ExternalSystemUtil.java:445)
  at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:726)
  at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:176)
  at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:556)
  at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:501)
  at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:66)
  at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:163)
  at com.intellij.openapi.progress.impl.ProgressManagerImpl$1.run(ProgressManagerImpl.java:137)
  at com.intellij.openapi.application.impl.ApplicationImpl$2.run(ApplicationImpl.java:334)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  at java.lang.Thread.run(Thread.java:745)
  </code></pre>
  
  <p>I've checked everything and they all look fine, can anyone help?</p>