Test worker "errors" in error.log

[Jacques Le Roux]

Hi,

Is it normal that we see Test worker "errors" (false JUnit errors actually, 
just tests) like
2016-10-04 09:58:47,590 |Test worker |DelegatorFactoryImpl          |E| Error creating delegator: No configuration found for delegator 
[delegatorNameWithNoConfiguration]

in the error.log. Should this not be only put in the console, does it depends 
on Gradle?

Thanks

Jacques