Travis Build Errors

Morning all, The regularity with which travis builds are failing because of timeouts seems to be increasing. Can I ask that anyone intimately familiar with how travis works looks into this problem for us ? There is/was a pull request to improve build time on travis, which may be a starting place and should be easy to find on github. We are obviously very close to the limit of what is allowed, because most of the time the build will pass if the job is restarted. Cheers Joe