Problem

When you build a Gradle project with Cloud Java libraries that have recent Guava version 32.0 and 32.1, they may encounter the following error:

12:03:19       > Module 'com.google.guava:guava' has been rejected:
12:03:19            Cannot select module with conflict on capability 'com.google.guava:listenablefuture:1.0' also provided by [com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava(runtime)]

This happens because Cloud Java libraries declare com.google.guava:listenablefuture (Guava's dependency), which conflicts with Guava's com.google.guava:listenablefuture Gradle capability.

Temporary Workaround

For a temporary workaround, please see Guava's release note https://github.com/google/guava/releases/tag/v32.1.0. Adding the following lines to your build.gradle resolves the issue:

configurations.all {
  resolutionStrategy.capabilitiesResolution.withCapability("com.google.guava:listenablefuture") {
    select("com.google.guava:guava:0")
  }
}

Long-term fix is coming

We're working on a fix so that Gradle users do not need to update their build.gradle and use Cloud Java client libraries. ETA is within 2 weeks. We'll update the release information here.