To repro this locally, run the following line from the root of a 'infra' checkout: ./recipes.py run --properties-file - gcc_toolchain <<EOF { "$recipe_engine/path": { "cache_dir": "/b/s/w/ir/cache", "temp_dir": "/b/s/w/ir/tmp/rt" }, "$recipe_engine/runtime": { "is_experimental": false, "is_luci": true }, "gcs_bucket": "fuchsia-build", "repository": "https://gnu.googlesource.com/binutils-gdb", "buildername": "gcc-x64-mac", "recipe": "gcc_toolchain", "project": "integration", "buildbucket": { "hostname": "cr-buildbucket.appspot.com", "build": { "created_ts": 1544068797514201, "tags": [ "builder:gcc-x64-mac", "buildset:commit/git/bf9201ee0e57faf02d4b4c3b45dbc0cd91653742", "buildset:commit/gitiles/gnu.googlesource.com/binutils-gdb/+/bf9201ee0e57faf02d4b4c3b45dbc0cd91653742", "gitiles_ref:refs/heads/binutils-2_31-branch", "scheduler_invocation_id:9093350294612826032", "scheduler_job_id:fuchsia/gcc-x64-mac", "user_agent:luci-scheduler" ], "bucket": "luci.fuchsia.ci", "created_by": "user:luci-scheduler@appspot.gserviceaccount.com", "project": "fuchsia", "id": "8927920232535999328" } }, "branch": "refs/heads/binutils-2_31-branch", "bot_id": "fuchsia-ci-mac-lab01-1004", "path_config": "generic", "packages": [ "topaz/packages/buildbot" ], "remote": "https://fuchsia.googlesource.com/integration", "revision": "bf9201ee0e57faf02d4b4c3b45dbc0cd91653742" } 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.