Using the trybots

Overview

The trybots let committers try uncommitted patches on multiple platforms in an automated way.

Trybots include all platforms for which we currently build Chromium, though they may not support all configurations built on CI.
The commit queue runs a subset of available trybots. See here for more information.
trybots can be manually invoked via git cl try or the “Choose Trybots” UI in gerrit.
Any committer can use the trybots.
Non-committers with tryjob access can also use the trybots. See here for more information.
External contributors without tryjob access can ask committers to run tryjobs for them.

Upload your change to gerrit via git cl upload
Run trybots:
- Run the default set of trybots by starting a CQ dry run, either by setting CQ+1 on gerrit or by running git cl try with no arguments.
- Run trybots of your choice by providing arguments to git cl try:
  - specify bucket name with -B/--bucket. For chromium tryjobs, this should always be luci.chromium.try
  - specify bot names with -b/--bot. This can be specified more than once.

Launching a CQ dry run:

$ git cl try

Launching a particular trybot:

$ git cl try -B luci.chromium.try -b linux-rel

Launching multiple trybots:

$ git cl try -B luci.chromium.try \
  -b android-binary-size \
  -b ios-simulator-full-configs \
  -b linux-blink-rel \
  -b win7-blink-rel
  # etc