/b/s/w/ir/cache/swarming_client/swarming spawn-tasks -server https://chromium-swarm.appspot.com -json-input /b/s/w/ir/tmp/t/tmpGamfok.json -json-output /b/s/w/ir/tmp/t/tmpcReBQe.json
in dir /b/s/w/ir/k:
 allow_subannotations: False
 cmd: ['/b/s/w/ir/cache/swarming_client/swarming',
 'spawn-tasks',
 '-server',
 'https://chromium-swarm.appspot.com',
 '-json-input',
 '/b/s/w/ir/tmp/t/tmpGamfok.json',
 '-json-output',
 '/b/s/w/ir/tmp/t/tmpcReBQe.json']
 env: {}
 env_prefixes: {}
 env_suffixes: {}
 infra_step: True
 name_tokens: ('trigger 2 tasks',)
 ok_ret: frozenset([0])
 step_test_data: <lambda>(...)
 trigger_specs: ()
full environment:
 BOTO_CONFIG: /b/s/w/ir/tmp/gsutil-task/.boto
 BUILDBUCKET_EXPERIMENTAL: FALSE
 CIPD_CACHE_DIR: /b/s/cipd_cache/cache
 CIPD_PROTOCOL: v2
 DEVSHELL_CLIENT_PORT: 41353
 DOCKER_CONFIG: /b/s/w/ir/tmp/docker-cfg-task
 DOCKER_TMPDIR: /b/s/w/ir/tmp/docker-tmp-task
 GIT_CONFIG_NOSYSTEM: 1
 GIT_TERMINAL_PROMPT: 0
 HOME: /home/swarming
 INFRA_GIT_WRAPPER_HOME: /b/s/w/ir/tmp/git-home-task
 INVOCATION_ID: 7fe6715e921a42b290384babd889d2f9
 JOURNAL_STREAM: 8:9752
 LANG: en_US.UTF-8
 LOGDOG_COORDINATOR_HOST: logs.chromium.org
 LOGDOG_STREAM_PREFIX: buildbucket/cr-buildbucket.appspot.com/8915145818724018560
 LOGDOG_STREAM_PROJECT: fuchsia
 LOGDOG_STREAM_SERVER_PATH: unix:/b/s/w/ir/tmp/ld.sock
 LOGNAME: swarming
 LUCI_CONTEXT: /b/s/w/ir/tmp/luci_context.978006759
 MAC_CHROMIUM_TMPDIR: /b/s/w/ir/tmp/t
 NO_GCE_CHECK: False
 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
 PWD: /b/s/w/ir/k
 PYTHONIOENCODING: UTF-8
 PYTHONUNBUFFERED: 1
 SHELL: /bin/bash
 SHLVL: 1
 SWARMING_BOT_ID: fuchsia-debian-16-6907d2bd-us-central1-c-x51w
 SWARMING_EXTERNAL_BOT_SETUP: 1
 SWARMING_HEADLESS: 1
 SWARMING_SERVER: https://chromium-swarm.appspot.com
 SWARMING_TASK_ID: 4470a1cde5629c11
 TEMP: /b/s/w/ir/tmp/t
 TEMPDIR: /b/s/w/ir/tmp/t
 TMP: /b/s/w/ir/tmp/t
 TMPDIR: /b/s/w/ir/tmp/t
 USER: swarming
 VPYTHON_VIRTUALENV_ROOT: /b/s/w/ir/cache/vpython
 _: /b/s/w/ir/cipd_bin_packages/vpython

[W2019-04-26T04:13:12.903203Z 401 0 retry.go:41] operation failed transiently                {"error":"googleapi: got HTTP response code 500 with body: 500 Internal Server Error\n\nThe server has either erred or is incapable of performing the requested operation.\n\n   ", "delay":"200ms", "opname":"NewTask"}