cluster: Log errors from bootInstances()
cluster: Log errors from bootInstances()

kklin/kelda,akshayknarayan/quilt,akshayknarayan/quilt,kklin/kelda,tejasmanohar/quilt,ZhongtianWang/quilt,LuiseV/quilt,kayousterhout/quilt,tejasmanohar/quilt,secant/quilt,secant/quilt,mmussomele/quilt,kklin/quilt,NetSys/quilt,PenguinToast/quilt,quilt/quilt,ejj/quilt-dev,kelda/kelda,stevenlin598/quilt,kklin/quilt,kelda/kelda,mmussomele/quilt,kayousterhout/quilt,ejj/quilt-dev,LuiseV/quilt,LuiseV/quilt,PenguinToast/quilt,NetSys/quilt,kelda/kelda,ZhongtianWang/quilt,LuiseV/quilt,akshayknarayan/quilt,mmussomele/quilt,ZhongtianWang/quilt,ZhongtianWang/quilt,secant/quilt,stevenlin598/quilt,quilt/quilt,quilt/quilt,NetSys/quilt,secant/quilt,LuiseV/quilt,NetSys/quilt,kayousterhout/quilt,mmussomele/quilt,kklin/quilt,PenguinToast/quilt,NetSys/quilt,stevenlin598/quilt,mmussomele/quilt,kelda/kelda,kklin/quilt,tejasmanohar/quilt,stevenlin598/quilt,kklin/kelda,PenguinToast/quilt,PenguinToast/quilt,quilt/quilt,secant/quilt,stevenlin598/quilt,tejasmanohar/quilt,ejj/quilt-dev,akshayknarayan/quilt,kayousterhout/quilt,stevenlin598/quilt,ejj/quilt-dev,mmussomele/quilt,kklin/kelda