gradle-r-plugin error

gistfile1.txt

C:\Projects\src\rsql>gradle clean build
The ConfigurationContainer.add() method has been deprecated and is scheduled to be removed in Gradle 2.0. Please use the
 create() method instead.
:clean UP-TO-DATE
:DESCRIPTION
Setting DESCRIPTION for package rsql
:roxygenize
> library(roxygen2,quietly=TRUE,verbose=FALSE);roxygenize(package.dir='pkg',roxygen.dir='build\rsql',roclets = c(collate
, namespace, rd, testthat));warnings()
Loading required package: stringr
Error in lapply(x, f) : object 'collate' not found
Calls: roxygenize -> str_c -> Filter -> unlist -> lapply
In addition: There were 15 warnings (use warnings() to see them)
Execution halted
:roxygenize FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':roxygenize'.
> Process 'command 'R'' finished with non-zero exit value 1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 4.113 secs