Currently, gradle reports

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.6/userguide/command_line_interface.html#sec:command_line_warnings

As we want to upgrade to Gradle 6 at some point, these deprecated features should be migrated.