kotlin - Why is "3rd-party Gradle plug-ins may be the cause" showing after updating Gradle to 3.1.0?

Question

After updating Gradle to com.android.tools.build:gradle:3.1.0, in the log I now see:

Folder E:WORKAppcar_androidcarappuildgeneratedsourcekaptKotlindevRelease

3rd-party Gradle plug-ins may be the cause

Answer 1

If you are receiving the warning:

3rd-party Gradle plug-ins may be the cause

in the build tab, it appears to be a known issue with Android Studio v3.1.x.
According to this report, It might be related to Instant App provision, but even removing that from the run/Debug configuration does not appear to resolve the issue (at least not with my installation of AS v3.1.1).

Please vote up this issue so that it will be given more attention by the Android Studio team and hopefully a timely fix.