Starting today, the chromiumos-sdk builder is failing in SDKBuildToolchains, trying to configure arm-none-eabi:

4:58:56: INFO: RunCommand: /b/swarming/w/ir/cache/cbuild/repository/chromite/bin/cros_sdk -- sudo -n 'PARALLEL_EMERGE_STATUS_FILE=/tmp/tmp0VsiQu' 'CROS_CACHEDIR=/b/swarming/w/ir/cache/cbuild/repository/.cache' 'CROS_SUDO_KEEP_ALIVE=unknown' -- /mnt/host/source/chromite/bin/cros_setup_toolchains --nousepkg in /b/swarming/w/ir/cache/cbuild/repository
cros_setup_toolchains: Unhandled exception:
Traceback (most recent call last):
  File "/mnt/host/source/chromite/bin/cros_setup_toolchains", line 169, in <module>
    DoMain()
  File "/mnt/host/source/chromite/bin/cros_setup_toolchains", line 165, in DoMain
    commandline.ScriptWrapperMain(FindTarget)
  File "/mnt/host/source/chromite/lib/commandline.py", line 911, in ScriptWrapperMain
    ret = target(argv[1:])
  File "/mnt/host/source/chromite/scripts/cros_setup_toolchains.py", line 1343, in main
    root=root)
  File "/mnt/host/source/chromite/scripts/cros_setup_toolchains.py", line 698, in UpdateToolchains
    targets = ExpandTargets(targets_wanted)
  File "/mnt/host/source/chromite/scripts/cros_setup_toolchains.py", line 666, in ExpandTargets
    all_targets = toolchain.GetAllTargets()
  File "/mnt/host/source/chromite/lib/toolchain.py", line 39, in GetAllTargets
    targets = GetToolchainsForBoard('all')
  File "/mnt/host/source/chromite/lib/toolchain.py", line 60, in GetToolchainsForBoard
    targets = toolchains.GetMergedToolchainSettings()
  File "/mnt/host/source/chromite/lib/toolchain_list.py", line 113, in GetMergedToolchainSettings
    (toolchain.target, key, existing_overrides[key], value))
chromite.lib.toolchain_list.MismatchedToolchainConfigsError: For toolchain arm-none-eabi, found default to be set to both True and False.
04:58:59: ERROR: 
return code: 1; command: /b/swarming/w/ir/cache/cbuild/repository/chromite/bin/cros_sdk -- sudo -n 'PARALLEL_EMERGE_STATUS_FILE=/tmp/tmp0VsiQu' 'CROS_CACHEDIR=/b/swarming/w/ir/cache/cbuild/repository/.cache' 'CROS_SUDO_KEEP_ALIVE=unknown' -- /mnt/host/source/chromite/bin/cros_setup_toolchains --nousepkg
cmd=['/b/swarming/w/ir/cache/cbuild/repository/chromite/bin/cros_sdk', '--', 'sudo', '-n', 'PARALLEL_EMERGE_STATUS_FILE=/tmp/tmp0VsiQu', 'CROS_CACHEDIR=/b/swarming/w/ir/cache/cbuild/repository/.cache', 'CROS_SUDO_KEEP_ALIVE=unknown', '--', '/mnt/host/source/chromite/bin/cros_setup_toolchains', '--nousepkg'], cwd=/b/swarming/w/ir/cache/cbuild/repository
04:58:59: ERROR: /mnt/host/source/chromite/bin/cros_setup_toolchains failed (code=1)