Build failed with such error:

hromeos-config-bsp-0.0.1-r15: >>> Install chromeos-config-bsp-0.0.1-r15 into /build/nami/tmp/portage/chromeos-base/chromeos-config-bsp-0.0.1-r15/image/ category chromeos-base
chromeos-config-bsp-0.0.1-r15:  * Installing 1 files to /usr/share/chromeos-config/yaml
chromeos-config-bsp-0.0.1-r15:  * Installing private-files.yaml
chromeos-config-bsp-0.0.1-r15:  * Checksums: 1303320507  787316460
chromeos-config-bsp-0.0.1-r15:  * YAML has been updated, but JSON is out of date.
chromeos-config-bsp-0.0.1-r15:  *  To fix, run:
chromeos-config-bsp-0.0.1-r15:  *  cros_config_schema -c /mnt/host/source/src/private-overlays/overlay-nami-private/chromeos-base/chromeos-config-bsp/files/model.yaml -o /mnt/host/source/src/private-overlays/overlay-nami-private/chromeos-base/chromeos-config-bsp/files/model_auto_generated.json
chromeos-config-bsp-0.0.1-r15:  * ERROR: chromeos-base/chromeos-config-bsp-0.0.1-r15::nami-private failed (install phase):
chromeos-config-bsp-0.0.1-r15:  *   (no error message)
chromeos-config-bsp-0.0.1-r15:  * 
chromeos-config-bsp-0.0.1-r15:  * Call stack:
chromeos-config-bsp-0.0.1-r15:  *     ebuild.sh, line  133:  Called src_install
chromeos-config-bsp-0.0.1-r15:  *   environment, line 3708:  Called check_json_file_from_yaml '/mnt/host/source/src/private-overlays/overlay-nami-private/chromeos-base/chromeos-config-bsp/files/model.yaml' '/mnt/host/source/src/private-overlays/overlay-nami-private/chromeos-base/chromeos-config-bsp/files/model_auto_generated.json'
chromeos-config-bsp-0.0.1-r15:  *   environment, line  792:  Called die
chromeos-config-bsp-0.0.1-r15:  * The specific snippet of code:
chromeos-config-bsp-0.0.1-r15:  *           die;
chromeos-config-bsp-0.0.1-r15:  * 
chromeos-config-bsp-0.0.1-r15:  * If you need support, post the output of `emerge --info '=chromeos-base/chromeos-config-bsp-0.0.1-r15::nami-private'`,
chromeos-config-bsp-0.0.1-r15:  * the complete build log and the output of `emerge -pqv '=chromeos-base/chromeos-config-bsp-0.0.1-r15::nami-private'`.
chromeos-config-bsp-0.0.1-r15:  * The complete build log is located at '/build/nami/tmp/portage/logs/chromeos-base:chromeos-config-bsp-0.0.1-r15:20180416-110350.log'.
chromeos-config-bsp-0.0.1-r15:  * For convenience, a symlink to the build log is located at '/build/nami/tmp/portage/chromeos-base/chromeos-config-bsp-0.0.1-r15/temp/build.log'.
chromeos-config-bsp-0.0.1-r15:  * The ebuild environment file is located at '/build/nami/tmp/portage/chromeos-base/chromeos-config-bsp-0.0.1-r15/temp/environment'.
chromeos-config-bsp-0.0.1-r15:  * Working directory: '/build/nami/tmp/portage/chromeos-base/chromeos-config-bsp-0.0.1-r15/work/chromeos-config-bsp-0.0.1'
chromeos-config-bsp-0.0.1-r15:  * S: '/build/nami/tmp/portage/chromeos-base/chromeos-config-bsp-0.0.1-r15/work/chromeos-config-bsp-0.0.1'
chromeos-config-bsp-0.0.1-r15: >>> Failed to emerge chromeos-base/chromeos-config-bsp-0.0.1-r15 for /build/nami/, Log file:
chromeos-config-bsp-0.0.1-r15: >>>  '/build/nami/tmp/portage/logs/chromeos-base:chromeos-config-bsp-0.0.1-r15:20180416-110350.log

It sounds like it's:

https://chrome-internal.googlesource.com/chromeos/overlays/overlay-nami-private/+/34e20650b84d197fcb842e00a97d6c703cff527d


https://chrome-internal-review.googlesource.com/c/chromeos/overlays/overlay-nami-private/+/608385

CL uploaded, https://chrome-internal-review.googlesource.com/c/chromeos/overlays/overlay-nami-private/+/609280

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/chromeos/overlays/overlay-nami-private/+/c7d68cd337f7a8b99e676f423b311e23e76c5745

commit c7d68cd337f7a8b99e676f423b311e23e76c5745
Author: YH Lin <yueherngl@google.com>
Date: Mon Apr 16 20:09:18 2018

i chumped the fix for this

Nami release build is good now. Therefore marking the bug fixed. Please re-open if in need. Thanks.