Build failure when merging `ml` branch

[fabsx00]

Hi,
when merging ml into master and executing gradle clean; gradle deploy, I get the following on a Debian Jessie with Gradle 1.5:

:projects:bjoern-plugins:alocs:jarWithDep FAILED

FAILURE: Build failed with an exception.

* Where:
Build file '/home/fabs/git/bjoern/build.gradle' line: 24

* What went wrong:
Execution failed for task ':projects:bjoern-plugins:alocs:jarWithDep'.
> No signature of method: org.gradle.api.internal.file.AbstractFileCollection$1.asCollection() is applicable for argument types: () values: []

@ml86 : any idea? Seems to me like we might be using a Gradle feature here that's not present in 1.5.