Unexpected `archives[0]` text appearing since upgradle to 4.1

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1 
To see all tasks and more detail, run gradlew tasks --all

To see more detail about a task, run gradlew help --task <task>


BUILD SUCCESSFUL in 1s
1 actionable task: 1 executed
[archives][0]-> 0% WAITING

This is probably my own stupidity, but so far has not been able to find anything related to it in my own build script.

SInce I upgradled to 4.1 I’m seeing the archives[0] text appear on the console output.

2

BTW. This is a project it is happening on -> https://github.com/asciidoctor/asciidoctor-leanpub-converter