https://uberchromegw.corp.google.com/i/chromeos/builders/kevin-paladin/builds/2494

Believed related to chroot-reuse project?

@@@BUILD_STEP@SetupBoard@@@
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@@@STEP_LINK@stdout-->stdio@https://luci-logdog.appspot.com/v/?s=chromeos%2Fbb%2Fchromeos%2Fkevin-paladin%2F2494%2F%2B%2Frecipes%2Fsteps%2FSetupBoard%2F0%2Fstdout@@@
** Start Stage SetupBoard - Fri, 22 Sep 2017 16:19:27 -0700 (PDT)
** 
** Stage that is responsible for building host pkgs and setting up a board.
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16:19:27: INFO: Running cidb query on pid 3812, repr(query) starts with <sqlalchemy.sql.expression.Update object at 0x7f58401751d0>
Preconditions for the stage successfully met. Beginning to execute stage...
16:19:27: INFO: Running cidb query on pid 3812, repr(query) starts with <sqlalchemy.sql.expression.Update object at 0x7f5840175490>
16:19:27: INFO: RunCommand: /b/c/cbuild/repository/chromite/bin/cros_sdk 'PARALLEL_EMERGE_STATUS_FILE=/tmp/tmp86Pvg_' 'USE=chrome_internal' 'FEATURES=separatedebug -separatedebug splitdebug' -- ./update_chroot --toolchain_boards kevin in /b/c/cbuild/repository
cp: cannot create regular file ‘/b/c/cbuild/repository/chroot/root/.boto’: No such file or directory
ln: failed to create symbolic link ‘/b/c/cbuild/repository/chroot/root/.boto’: No such file or directory
-bash: ./update_chroot: No such file or directory
16:19:29: ERROR: 
return code: 127; command: /b/c/cbuild/repository/chromite/bin/cros_sdk 'PARALLEL_EMERGE_STATUS_FILE=/tmp/tmp86Pvg_' 'USE=chrome_internal' 'FEATURES=separatedebug -separatedebug splitdebug' -- ./update_chroot --toolchain_boards kevin
cmd=['/b/c/cbuild/repository/chromite/bin/cros_sdk', 'PARALLEL_EMERGE_STATUS_FILE=/tmp/tmp86Pvg_', u'USE=chrome_internal', 'FEATURES=separatedebug -separatedebug splitdebug', '--', './update_chroot', '--toolchain_boards', u'kevin'], cwd=/b/c/cbuild/repository, extra env={'PARALLEL_EMERGE_STATUS_FILE': '/tmp/tmp86Pvg_', 'USE': u'chrome_internal', 'FEATURES': 'separatedebug -separatedebug splitdebug'}