https://k8s-gubernator.appspot.com/build/istio-prow/pilot-postsubmit/87/

W0830 20:13:30.694] prow/pilot-postsubmit.sh: line 57: bin/toolbox/pkg_coverage.sh: No such file or directory
E0830 20:13:30.694] Build failed
I0830 20:13:30.694] process 348 exited with code 1 after 2.5m
E0830 20:13:30.695] FAIL: pilot-postsubmit