Prepopulating placeholder data Rendering input placeholders rendering placeholders rendering std handles stdout: <RECIPE_MODULES.recipe_engine.raw_io.api.OutputDataPlaceholder object at 0x7ff7fca3ea50> stdin: <RECIPE_MODULES.recipe_engine.raw_io.api.InputDataPlaceholder object at 0x7ff7fca3e710> merging envs checking cwd: None resolving cmd0 '/b/s/w/ir/k/zircon/prebuilt/downloads/symbolize' in PATH: ['/b/s/w/ir/cipd_bin_packages', '/b/s/w/ir/cipd_bin_packages/bin', '/b/s/cipd_cache/bin', '/usr/local/sbin', '/usr/local/bin', '/usr/sbin', '/usr/bin', '/sbin', '/bin'] with cwd: /b/s/w/ir/k cmd0 appears to be absolute checking '/b/s/w/ir/k/zircon/prebuilt/downloads/symbolize' resolved cmd0: '/b/s/w/ir/k/zircon/prebuilt/downloads/symbolize' Executing step fhandles {'stdin': <open file '/b/s/w/ir/tmp/t/tmpMuqlx6', mode 'rb' at 0x7ff7fca6b780>, 'stderr': -1, 'stdout': <open file '/b/s/w/ir/tmp/t/tmpmQ70PP', mode 'wb' at 0x7ff7fca6b6f0>} Resolving output placeholders cleaning stdin: <RECIPE_MODULES.recipe_engine.raw_io.api.InputDataPlaceholder object at 0x7ff7fca3e710> finding result of stdout: <RECIPE_MODULES.recipe_engine.raw_io.api.OutputDataPlaceholder object at 0x7ff7fca3ea50>