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that is weird. might be a studio issue, can you share the output of gradle? (the output from command line)

Here it is, with --info.
Since the module is a mixed Java/Kotlin one, I have tried with both annotationProcessor and kapt.
The result is the same, no indication about the failure.

that is so weird, we always report that error w/ a reference to the field:

context.checker.check(success, field.element, CANNOT_FIND_GETTER_FOR_FIELD)

can you share your build.gradle file? Which version of kotlin are you using?
Also, make sure you have kotlin-kapt plugin applied.

Also, I realized that you've put version 1.1.0-alpha5 which does not exist. Did you mean 1.1.0-alpha1 or 1.0.0-alpha5 ?

Apologies, I meant to write 1.1.0-alpha1.

Worth mentioning that the @Database class and the @Entity are in two different library modules, one directly depending on the other.
Both modules are using Kotlin version 1.2.21, kotlin-apt and `kapt "android.arch.persistence.room:compiler:1.1.0-alpha1"`
and `implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.2.21"`.

so you are probably hitting b/67181813 which is already fixed and should go out in alpha2 (hopefully this week).

But in terms of why the error is not populating, i'm still baffled :/. The sample in b/67181813 properly reports the error (they are different cases but same error reporting on our end).

Is it possible for you to create a sample project that reproduces the error?

Sure thing. I've created a super simple test project where the error output is the same.
Again, latest Android Studio latest stable release (3.0.1) on Mac OSX 10.13.3, embedded JDK.

Not sure these two bugs are related (I've added a comment here, despite it being closed: https://issuetracker.google.com/issues/69562125), but in the same test project it's also very easy to reproduce another issue.
By just adding the `@IntRange` annotation to the `id` field in `TestEntity` (and uncommenting the getter), the compilation breaks again, this time kapt fails with this message: "Error:error: Entities and Pojos must have a usable public constructor. You can have an empty constructor or a constructor whose parameters match the fields (by name and type)."
Annotating parameters in the constructor used by Room breaks it.

thanks for the sample app! I'll debug and see why the error does not show properly.
about the other bug, it is actually a jdk bug :/

https://bugs.openjdk.java.net/browse/JDK-8007720

so the element about which we report the error seems fine.

I'll try to convert it to java and see if it will have the same problem.

same in java. Looks like annotation processor cannot report an error on its dependency class :/. We need to figure out a way to either resolve it or at least discover that it is coming from a dependency and report manually.