Incredibuild Plugin is not compatible with nuget plugin anymore
The NuGet plugin relies on the msbuild plugin heavily and which as a result means it does not interact nicely with the incredibuild plugin which essentially overwrites the msbuild plugin.
See https://github.com/Ullink/gradle-nuget-plugin/blob/master/src/main/groovy/com/ullink/NuGetSpec.groovy#L95 onwards as an example