To repro this locally, run the following line from the root of a 'infra' checkout: ./recipes.py run --properties-file - zircon <<EOF { "tryjob": true, "recipe": "zircon", "patch_project": "zircon", "$recipe_engine/path": { "cache_dir": "/b/s/w/ir/cache", "temp_dir": "/b/s/w/ir/tmp/rt" }, "patch_gerrit_url": "https://fuchsia-review.googlesource.com", "patch_repository_url": "https://fuchsia.googlesource.com/zircon", "patch_ref": "refs/changes/52/234452/4", "attempt_start_ts": 1544844855000000, "blamelist": [ "planders@google.com" ], "revision": "HEAD", "category": "cq", "patch_set": 4, "repository": "https://fuchsia.googlesource.com/zircon", "buildername": "zircon-x64-gcc-qemu_kvm", "run_tests": true, "patch_storage": "gerrit", "$recipe_engine/runtime": { "is_experimental": false, "is_luci": true }, "buildbucket": { "hostname": "cr-buildbucket.appspot.com", "build": { "created_ts": 1544844881476053, "tags": [ "builder:zircon-x64-gcc-qemu_kvm", "buildset:patch/gerrit/fuchsia-review.googlesource.com/234452/4", "cq_experimental:false", "user_agent:cq" ], "bucket": "luci.fuchsia.try", "created_by": "user:5071639625-1lppvbtck1morgivc6sq4dul7klu27sd@developer.gserviceaccount.com", "project": "fuchsia", "id": "8927106449519900224" } }, "reason": "CQ", "patch_issue": 234452, "remote": "https://fuchsia.googlesource.com/integration", "packages": [ "topaz/packages/buildbot" ], "toolchain": "gcc", "target": "x64", "manifest": "zircon/zircon", "project": "integration", "path_config": "generic", "bot_id": "fuchsia-debian-16-c4acfc8a-us-central1-b-wvdb" } EOF To run on Windows, you can put the JSON in a file and redirect the contents of the file into run_recipe.py, with the < operator.