whirlwind-no-vmtest-pre-cq started failing repeatedly yesterday in BuildPackages, preventing any changes that trigger this builder from being committed:

http://cros-goldeneye/chromeos/healthmonitoring/buildDetails?id=2680646
http://cros-goldeneye/chromeos/healthmonitoring/buildDetails?id=2680831
etc.

target-jetstream-dev-root-1-r11: >>> Install target-jetstream-dev-root-1-r11 into /build/whirlwind/tmp/portage/virtual/target-jetstream-dev-root-1-r11/image/ category virtual
target-jetstream-dev-root-1-r11: Traceback (most recent call last):
target-jetstream-dev-root-1-r11:   File "/usr/lib/portage/python2.7/doins.py", line 584, in <module>
target-jetstream-dev-root-1-r11:     sys.exit(main(sys.argv[1:]))
target-jetstream-dev-root-1-r11:   File "/usr/lib/portage/python2.7/doins.py", line 575, in main
target-jetstream-dev-root-1-r11:     os.path.dirname(source)):
target-jetstream-dev-root-1-r11:   File "/usr/lib/portage/python2.7/doins.py", line 423, in _doins
target-jetstream-dev-root-1-r11:     return install_runner.install_file(source, os.path.dirname(dest))
target-jetstream-dev-root-1-r11:   File "/usr/lib/portage/python2.7/doins.py", line 359, in install_file
target-jetstream-dev-root-1-r11:     return self._ins_runner.run(source, dest_dir)
target-jetstream-dev-root-1-r11:   File "/usr/lib/portage/python2.7/doins.py", line 167, in run
target-jetstream-dev-root-1-r11:     if not self._is_install_allowed(source, dest):
target-jetstream-dev-root-1-r11:   File "/usr/lib/portage/python2.7/doins.py", line 214, in _is_install_allowed
target-jetstream-dev-root-1-r11:     source_stat = os.stat(source)
target-jetstream-dev-root-1-r11: OSError: [Errno 2] No such file or directory: '/mnt/host/source/src/private-overlays/project-jetstream-private/virtual/target-jetstream-dev-root/files/etc/init/*'
target-jetstream-dev-root-1-r11:  * ERROR: virtual/target-jetstream-dev-root-1-r11::jetstream-private failed (install phase):
target-jetstream-dev-root-1-r11:  *   doins failed

I think that this was caused by https://crrev.com/i/640812, which deleted virtual/target-jetstream-dev-root/files/etc/init/ap-critical-failure.override, apparently leaving the directory empty. It went through the pre-cq, which seems odd if it also broke the pre-cq.

I'm planning to revert this change.