Using Android Studio 3.3 Canary 11 with the gradle plugin version 3.3.0-alpha11. It throws the following error when trying to sync gradle
WARNI
Build log prints how to debug this, particularly you need to run build with -Pandroid.debug.obsoleteApi=true, that'll print stack-trace of call to deprecated API and you'll be able to figure which plugin/code calls it.
If it ends up being your code — use new Provider API (read Lazy Task Configuration doc)
If it comes from other plugin — report to them with stack-trace and warning message and maybe submit a patch. As in this case its related to io.fabric issue.