At the end of a gradle build, the success message looks like this:
Total time: 4593.805 secs
I think it'd be much easier on the eyes to see this time represented in a more human readable format.
Maven, for example, splits the time into (at least) minutes and seconds, making it more human readable.
I've created a patch that splits the reported build time into hours, minutes and seconds. It includes 5 new junit test cases, increasing the coverage of Clock. Patch created against revision 1237.