The "correct" solution is built into cbuildbot, which has a way to strip out unsupported arguments when invoking old versions of itself during bootstrap. But I don't remember how that works and will have to go look it up.

The "quick" solution is to turn off the option in the recipe for a little while.

How quick a solution do we need?

I think it depends on what comes up, for the particular case I was trying to get this trybot for we can probably get by with a ToT build.

It is quite possible others will hit this eventually (e.g. someone building say an old firmware or factory branch manually) which may up the priority, the problem is when this does come up it will probably get urgent for the impacted project quickly. On the other hand it may be no one sees a problem for weeks.

we do check for branch version before appending this option. I'll take a look what's going wrong. 

I'm working on a recipe patch to fix this.

made a quick fix in remote_try. Looks like it's running. but it's remote try with --debug. 


https://uberchromegw.corp.google.com/i/chromiumos.tryserver/builders/cheets_release/builds/3

removed --debug. Please find the job at

https://uberchromegw.corp.google.com/i/chromiumos.tryserver/builders/cheets_release/builds/4

We'll work on the fix.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/chromite/+/bb79be9871a84063bdae21500debbfe76520afd6

commit bb79be9871a84063bdae21500debbfe76520afd6
Author: Don Garrett <dgarrett@google.com>
Date: Tue Sep 27 18:14:07 2016

cbuildbot: Add api version to --git-cache-dir.

Also, use the same version for the deprecated --repo-cache option.

BUG= chromium:650713 
TEST=run_tests

Change-Id: I03c4636b87f93fe786079f59c7200bf22383e5c4
Reviewed-on: https://chromium-review.googlesource.com/389873
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Commit-Queue: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>

[modify] https://crrev.com/bb79be9871a84063bdae21500debbfe76520afd6/scripts/cbuildbot.py
[modify] https://crrev.com/bb79be9871a84063bdae21500debbfe76520afd6/cbuildbot/constants.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/tools/build.git/+/fae60ba54c83abbbfbe84b5533f6a3e8f9b55178

commit fae60ba54c83abbbfbe84b5533f6a3e8f9b55178
Author: dnj <dnj@chromium.org>
Date: Thu Sep 29 19:41:03 2016

Base flags on bootstrapped Chromite branch.

Currently, Chromite flags are chosen based on the checked-out Chromite
barnch. However, this can be overridden by the "--branch" parameter.
Update the recipe to check for this parameter and, if present, base its
flag choices off that branch instaed of the bootstrapping Chromite
branch.

BUG= chromium:650713 
TEST=expectations

Review-Url: https://codereview.chromium.org/2374543006

[modify] https://crrev.com/fae60ba54c83abbbfbe84b5533f6a3e8f9b55178/scripts/slave/recipe_modules/chromite/api.py
[modify] https://crrev.com/fae60ba54c83abbbfbe84b5533f6a3e8f9b55178/scripts/slave/recipe_modules/chromite/config.py
[add] https://crrev.com/fae60ba54c83abbbfbe84b5533f6a3e8f9b55178/scripts/slave/recipes/cros/cbuildbot_tryjob.expected/release_branch_one_param.json
[add] https://crrev.com/fae60ba54c83abbbfbe84b5533f6a3e8f9b55178/scripts/slave/recipes/cros/cbuildbot_tryjob.expected/release_branch_two_params.json
[modify] https://crrev.com/fae60ba54c83abbbfbe84b5533f6a3e8f9b55178/scripts/slave/recipes/cros/cbuildbot_tryjob.py

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/chrome/tools/build_limited/scripts/slave/+/1059d421c173a18f95afc205fbbccfe8ea8e0d59

commit 1059d421c173a18f95afc205fbbccfe8ea8e0d59
Author: recipe-roller <recipe-roller@chromium.org>
Date: Thu Sep 29 19:45:08 2016

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra.git/+/6c7de18dafd100a1ab1e014f29a4b9987b1c8bd0

commit 6c7de18dafd100a1ab1e014f29a4b9987b1c8bd0
Author: recipe-roller <recipe-roller@chromium.org>
Date: Thu Sep 29 20:05:03 2016

Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (e.g. depot_tools) into downstream projects
(e.g. tools/build).

More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug
(or complain)

build:
  https://crrev.com/fae60ba54c83abbbfbe84b5533f6a3e8f9b55178 Base flags on bootstrapped Chromite branch. (dnj@chromium.org)

TBR=martiniss@chromium.org,phajdan.jr@chromium.org
BUG= chromium:650713 

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Review-Url: https://codereview.chromium.org/2380113003

[modify] https://crrev.com/6c7de18dafd100a1ab1e014f29a4b9987b1c8bd0/infra/config/recipes.cfg