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Can you please help share the  error log thrown when a run/debug instance fails ? Also share the idea.log file (select Help > Show Log in Finder/Explorer) if this issue reproduces again? Thank you very much!

Hey I added latest logs. I also downloaded latest canary build from the
website and clean install it. The issue started to occur after switching
the branch once or twice and also between release & debug.

On Fri, May 3, 2019 at 12:27 PM <buganizer-system@google.com> wrote:

Thank you for your feedback. Team may reach out for more feedback in reproducing or triaging this issue.

com.intellij.openapi.project.IndexNotReadyException: Please change caller according to com.intellij.openapi.project.IndexNotReadyException documentation
        at com.intellij.openapi.project.IndexNotReadyException.create(IndexNotReadyException.java:77)
        at com.intellij.util.indexing.FileBasedIndexImpl.handleDumbMode(FileBasedIndexImpl.java:777)
        at com.intellij.util.indexing.FileBasedIndexImpl.ensureUpToDate(FileBasedIndexImpl.java:726)
        at com.intellij.util.indexing.FileBasedIndexImpl.ensureUpToDate(FileBasedIndexImpl.java:709)
        at com.intellij.psi.stubs.StubIndexImpl.doProcessStubs(StubIndexImpl.java:305)
        at com.intellij.psi.stubs.StubIndexImpl.processElements(StubIndexImpl.java:281)
        at com.intellij.psi.stubs.StubIndex.getElements(StubIndex.java:121)
        at com.intellij.psi.stubs.StubIndex.getElements(StubIndex.java:109)
        at com.intellij.psi.impl.java.stubs.index.JavaFullClassNameIndex.get(JavaFullClassNameIndex.java:47)
        at com.intellij.psi.impl.file.impl.JavaFileManagerImpl.doFindClasses(JavaFileManagerImpl.java:88)
        at com.intellij.psi.impl.file.impl.JavaFileManagerImpl.findClass(JavaFileManagerImpl.java:123)
        at com.intellij.psi.impl.PsiElementFinderImpl.findClass(PsiElementFinderImpl.java:38)
        at com.intellij.psi.impl.JavaPsiFacadeImpl.doFindClass(JavaPsiFacadeImpl.java:116)
        at com.intellij.psi.impl.JavaPsiFacadeImpl.findClass(JavaPsiFacadeImpl.java:93)
        at org.jetbrains.android.dom.converters.PackageClassConverter.lambda$findClassFromString$0(PackageClassConverter.java:216)
        at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
        at java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1359)
        at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
        at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:498)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464)
        at org.jetbrains.android.dom.converters.PackageClassConverter.findClassFromString(PackageClassConverter.java:218)
        at org.jetbrains.android.dom.converters.PackageClassConverter.fromString(PackageClassConverter.java:182)
        at org.jetbrains.android.dom.converters.PackageClassConverter.fromString(PackageClassConverter.java:73)
        at com.intellij.util.xml.impl.GetInvocation.getValueInner(GetInvocation.java:99)
        at com.intellij.util.xml.impl.GetInvocation.getOrCalcValue(GetInvocation.java:74)
        at com.intellij.util.xml.impl.GetInvocation.invoke(GetInvocation.java:62)
        at com.intellij.util.xml.impl.DomInvocationHandler.invoke(DomInvocationHandler.java:686)
        at org.jetbrains.android.dom.AndroidAttributeValue$$EnhancerByJetBrainsMainCglib$$c08a10e8.getValue(<generated>)
        at com.android.tools.idea.testartifacts.instrumented.AndroidTestRunConfiguration.getRunnerFromManifest(AndroidTestRunConfiguration.java:411)
        at com.android.tools.idea.testartifacts.instrumented.AndroidTestRunConfiguration.lambda$getRunnerFromManifest$3(AndroidTestRunConfiguration.java:404)
        at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:961)
        at com.android.tools.idea.testartifacts.instrumented.AndroidTestRunConfiguration.getRunnerFromManifest(AndroidTestRunConfiguration.java:404)
        at com.android.tools.idea.testartifacts.instrumented.AndroidTestRunConfiguration.findInstrumentationRunner(AndroidTestRunConfiguration.java:377)
        at com.android.tools.idea.testartifacts.instrumented.AndroidTestRunConfiguration.getApplicationLaunchTask(AndroidTestRunConfiguration.java:348)
        at com.android.tools.idea.run.AndroidLaunchTasksProvider.getTasks(AndroidLaunchTasksProvider.java:111)

Michal, does this ring a bell?

While I'm working on a fix, I have a question: it seems you have an "instrumentation" tag in your module's main manifest - why is that? Are you using it to override the runner set in Gradle DSL?

Hi,

Yes. We are running automation tests and we use instrumentation.

Sorry for late response.

On Wed, May 29, 2019, 19:03 <buganizer-system@google.com> wrote:

What I meant was this: why are you setting it in src/main/AndroidManifest.xml and not in build.gradle? Or src/androidTest/AndroidManifest.xml?

I didn't set up the project by myself. It was already set. So, If I move it
to build gradle should be fine?

On Fri, May 31, 2019, 18:40 <buganizer-system@google.com> wrote:

It seems you are hitting a broken code path that should probably not be there at all. We will fix it, but for now you should be able to replace the instrumentation tag with `android.defaultConfig.testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"` in your build.gradle. If this doesn't work for you, we would like to understand why, as Studio projects generally assume that's how the runner is set.

Thanks, I will try it.

It should be fixed in the next 3.5 and 3.6 builds.