Running recipe with {'$recipe_engine/path': {'cache_dir': '/b/s/w/ir/cache', 'temp_dir': '/b/s/w/ir/tmp/rt'}, '$recipe_engine/swarming': {'server': 'https://chromium-swarm.appspot.com'}, 'remote': 'https://fuchsia.googlesource.com/integration', '$recipe_engine/buildbucket': {'hostname': 'cr-buildbucket.appspot.com', 'build': {'tags': [{'key': 'buildset', 'value': 'commit/git/1ecedb23416943b13fd3f48a5d398f2cfa6dbee4'}, {'key': 'buildset', 'value': 'commit/gitiles/dart.googlesource.com/sdk/+/1ecedb23416943b13fd3f48a5d398f2cfa6dbee4'}, {'key': 'scheduler_invocation_id', 'value': '9081150552842626464'}, {'key': 'scheduler_job_id', 'value': 'fuchsia/dart-x64-mac'}, {'key': 'user_agent', 'value': 'luci-scheduler'}], 'builder': {'project': 'fuchsia', 'builder': 'dart-x64-mac', 'bucket': 'ci'}, 'createTime': '2019-04-19T19:49:37.845809Z', 'infra': {'buildbucket': {'serviceConfigRevision': '9761e9d46a8921329e92686714efeddd291ab85c'}, 'recipe': {'name': 'dart_toolchain', 'cipdPackage': 'fuchsia/infra/recipe_bundles/fuchsia.googlesource.com/infra/recipes'}, 'swarming': {'priority': 30, 'hostname': 'chromium-swarm.appspot.com', 'taskServiceAccount': 'tools-ci-builder@fuchsia-infra.iam.gserviceaccount.com'}}, 'createdBy': 'project:fuchsia', 'input': {'gitilesCommit': {'project': 'sdk', 'host': 'dart.googlesource.com', 'ref': 'refs/heads/master', 'id': '1ecedb23416943b13fd3f48a5d398f2cfa6dbee4'}}, 'id': '8915720490830648320'}}, 'repository': 'https://dart.googlesource.com/sdk', 'buildername': 'dart-x64-mac', 'recipe': 'dart_toolchain', 'project': 'integration', 'buildbucket': {'hostname': 'cr-buildbucket.appspot.com', 'build': {'created_ts': 1555703377845809, 'tags': ['builder:dart-x64-mac', 'buildset:commit/git/1ecedb23416943b13fd3f48a5d398f2cfa6dbee4', 'buildset:commit/gitiles/dart.googlesource.com/sdk/+/1ecedb23416943b13fd3f48a5d398f2cfa6dbee4', 'gitiles_ref:refs/heads/master', 'scheduler_invocation_id:9081150552842626464', 'scheduler_job_id:fuchsia/dart-x64-mac', 'user_agent:luci-scheduler'], 'bucket': 'luci.fuchsia.ci', 'created_by': 'project:fuchsia', 'project': 'fuchsia', 'id': '8915720490830648320'}}, 'checkout.remote': 'https://fuchsia.googlesource.com/integration', '$recipe_engine/runtime': {'is_experimental': False, 'is_luci': True}, 'branch': 'refs/heads/master', 'path_config': 'generic', 'gcs_bucket': 'fuchsia-build', 'bot_id': 'fuchsia-ci-mac-lab01-1001', '$recipe_engine/isolated': {'server': 'https://isolateserver.appspot.com'}, 'checkout.project': 'integration', 'revision': '1ecedb23416943b13fd3f48a5d398f2cfa6dbee4'}