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      "options": {
        "host-checked": true,
        "timeout": 240,
        "dart2js-options": [
          "--no-sound-null-safety"
        ]
      }
    },
    "dart2js-hostasserts-weak-(linux|win)-x64-(d8|chrome)": {
      "options": {
        "host-checked": true,
        "timeout": 240,
        "builder-tag": "dart2js-weak",
        "dart2js-options": [
          "--libraries-spec=sdk/lib/libraries.json",
          "--platform-binaries=out/ReleaseX64/"
        ]
      }
    },
    "dart2js-hostasserts-weak-max-fragments-(linux|win)-x64-(d8|chrome)": {
      "options": {
        "host-checked": true,
        "timeout": 240,
        "builder-tag": "dart2js-weak",
        "dart2js-options": [
          "--libraries-spec=sdk/lib/libraries.json",
          "--platform-binaries=out/ReleaseX64/",
          "--merge-fragments-threshold=3",
          "--simple-load-ids"
        ]
      }
    },
    "dart2js-hostasserts-weak-mac-x64-(d8|chrome)": {
      "options": {
        "host-checked": true,
        "timeout": 240,
        "builder-tag": "dart2js-weak",
        "dart2js-options": [
          "--libraries-spec=sdk/lib/libraries.json",
          "--platform-binaries=xcodebuild/ReleaseX64/"
        ]
      }
    },
    "dart2js-hostasserts-strong-(linux|win)-x64-(d8|chrome)": {
      "options": {
        "host-checked": true,
        "timeout": 240,
        "builder-tag": "dart2js-strong",
        "dart2js-options": [
          "--libraries-spec=sdk/lib/libraries.json",
          "--platform-binaries=out/ReleaseX64/"
        ]
      }
    },
    "dart2js-hostasserts-strong-max-fragments-(linux|win)-x64-(d8|chrome)": {
      "options": {
        "host-checked": true,
        "timeout": 240,
        "builder-tag": "dart2js-strong",
        "dart2js-options": [
          "--libraries-spec=sdk/lib/libraries.json",
          "--platform-binaries=out/ReleaseX64/",
          "--merge-fragments-threshold=3",
          "--simple-load-ids"
        ]
      }
    },
    "dart2js-hostasserts-strong-mac-x64-(d8|chrome)": {
      "options": {
        "host-checked": true,
        "timeout": 240,
        "builder-tag": "dart2js-strong",
        "dart2js-options": [
          "--libraries-spec=sdk/lib/libraries.json",
          "--platform-binaries=xcodebuild/ReleaseX64/"
        ]
      }
    },
    "dartkp-android-(debug|product|release)-arm_x64": {
      "options": {
        "builder-tag": "crossword",
        "use-elf": true
      }
    },
    "dartkp-android-(debug|product|release)-(arm|arm64|arm64c)": {
      "options": {
        "use-elf": true
      }
    },
    "dartk-android-(debug|product|release)-(arm|arm64|arm64c)": {},
    "dartkp-(linux|win|mac)-(debug|product|release)-(arm64|arm64c|simarm|simarm64|simarm64c)": {
      "options": {
        "use-elf": true
      }
    },
    "dartkp-dwarf-(linux|win|mac)-product-(arm64|arm64c|simarm|simarm64|simarm64c|x64|x64c)": {
      "options": {
        "builder-tag": "dwarf",
        "vm-options": [
          "--dwarf_stack_traces"
        ],
        "use-elf": true
      }
    },
    "dartkp-linux-(debug|product|release)-simarm-crossword": {
      "options": {
        "builder-tag": "crossword"
      }
    },
    "dartkp-weak-asserts-linux-(debug|product|release)-simarm-crossword": {
      "options": {
        "builder-tag": "crossword"
      }
    },
    "dartkp-strong-linux-(debug|product|release)-simarm-crossword": {
      "options": {
        "builder-tag": "crossword"
      }
    },
    "dartkp-(win|mac)-(debug|product|release)-simarm-crossword": {
      "options": {
        "builder-tag": "crossword",
        "use-elf": true
      }
    },
    "dartkp-win-(product|release)-(x64|x64c)": {
      "options": {
        "use-elf": true
      }
    },
    "dartkp-win-debug-(x64|x64c)": {
      "options": {
        "use-elf": true,
        "vm-options": []
      }
    },
    "dartkp-(linux|mac)-(product|release)-(x64|x64c)": {},
    "dartkp-obfuscate-(linux|mac|win)-(debug|product|release)-(x64|x64c)": {
      "options": {
        "builder-tag": "obfuscated",
        "vm-options": [
          "--obfuscate"
        ]
      }
    },
    "dartkp-(linux|mac)-debug-(x64|x64c)": {
      "options": {
        "vm-options": []
      }
    },
    "dartkp-no-bare-(linux|mac|win)-(debug|product|release)-(x64|x64c)": {
      "options": {
        "vm-options": [
          "--no-use-bare-instructions"
        ]
      }
    },
    "dartkp-no-bare-(linux|mac|win)-(debug|product|release)-(simarm|simarm64|simarm64c)": {
      "options": {
        "vm-options": [
          "--no-use-bare-instructions"
        ],
        "use-elf": true
      }
    },
    "dartk-(linux|mac|win)-(debug|product|release)-(ia32|x64|x64c)": {},
    "dartk-fuchsia-(debug|product|release)-(x64|x64c)": {},
    "dartk-linux-debug-(ia32|x64)-canary": {
      "options": {
        "builder-tag": "canary"
      }
    },
    "dartkp-weak-asserts-(linux|mac)-(debug|product|release)-(x64|x64c)": {
      "options": {
        "enable-asserts": true,
        "builder-tag": "vm_nnbd"
      }
    },
    "dartkp-weak-asserts-(linux|mac)-(debug|product|release)-(simarm|simarm64|simarm64c)": {
      "options": {
        "enable-asserts": true,
        "use-elf": true,
        "builder-tag": "vm_nnbd"
      }
    },
    "dartkp-weak-asserts-win-(debug|product|release)-(simarm64|simarm64c|x64|x64c)": {
      "options": {
        "enable-asserts": true,
        "use-elf": true,
        "builder-tag": "vm_nnbd"
      }
    },
    "dartk-weak-asserts-(linux|mac|win)-(debug|product|release)-(ia32|simarm|simarm64|simarm64c|x64|x64c)": {
      "options": {
        "enable-asserts": true,
        "builder-tag": "vm_nnbd"
      }
    },
    "dartk-strong-(linux|mac|win)-(debug|product|release)-(ia32|simarm|simarm64|simarm64c|x64|x64c)": {
      "options": {
        "builder-tag": "vm_nnbd"
      }
    },
    "dartkp-strong-(linux|mac)-(debug|product|release)-(x64|x64c)": {
      "options": {
        "builder-tag": "vm_nnbd"
      }
    },
    "dartkp-strong-(linux|mac)-(debug|product|release)-(simarm|simarm64|simarm64c)": {
      "options": {
        "use-elf": true,
        "builder-tag": "vm_nnbd"
      }
    },
    "dartkp-strong-win-(debug|product|release)-(simarm64|simarm64c|x64|x64c)": {
      "options": {
        "use-elf": true,
        "builder-tag": "vm_nnbd"
      }
    },
    "dartk-checked-(linux|mac|win)-(debug|product|release)-(ia32|x64|x64c)": {
      "options": {
        "enable-asserts": true
      }
    },
    "dartk-(linux|mac|win)-(debug|product|release)-(arm64|arm64c|simarm|simarm64|simarm64c)": {},
    "dartk-optcounter-(linux|mac|win)-(debug|product|release)-(ia32|x64|x64c|simarm|simarm64|simarm64c)": {
      "options": {
        "builder-tag": "optimization_counter_threshold",
        "vm-options": [
          "--optimization-counter-threshold=5",
          "--random-seed=__RANDOM__"
        ]
      }
    },
    "dartk-reload-(linux|mac|win)-(debug|product|release)-(ia32|x64|x64c)": {
      "options": {
        "hot-reload": true
      }
    },
    "dartk-reload-rollback-(linux|mac|win)-(debug|product|release)-(ia32|x64|x64c)": {
      "options": {
        "hot-reload-rollback": true
      }
    },
    "dartk-linux-(debug|product|release)-(arm|arm64|arm64c)-qemu": {
      "options": {
        "use-qemu": true
      }
    },
    "dartkp-linux-(debug|product|release)-(arm|arm64|arm64c)-qemu": {
      "options": {
        "use-qemu": true
      }
    },
    "app_jitk-(linux|mac|win)-(debug|product|release)-(ia32|x64|x64c)": {},
    "dartdevk-checked-(linux|mac|win)-(debug|product|release)-(chrome|firefox)": {
      "options": {
        "checked": true,
        "use-sdk": true
      }
    },
    "dartdevk-strong-linux-release-chrome": {
      "options": {
        "checked": true,
        "use-sdk": true,
        "enable-asserts": true
      }
    },
    "dartdevk-weak-linux-release-chrome": {
      "options": {
        "checked": true,
        "use-sdk": true,
        "enable-asserts": true
      }
    },
    "cfe-(linux|mac|win)": {
      "options": {
        "compiler": "fasta"
      }
    },
    "cfe-weak-(linux|mac|win)": {
      "options": {
        "compiler": "fasta"
      }
    },
    "cfe-strong-(linux|mac|win)": {
      "options": {
        "compiler": "fasta"
      }
    },
    "analyzer-(linux|mac|win)": {
      "options": {
        "compiler": "dart2analyzer",
        "use-sdk": true
      }
    },
    "analyzer-asserts-(linux|mac|win)": {
      "options": {
        "compiler": "dart2analyzer",
        "enable-asserts": true,
        "use-sdk": true
      }
    },
    "analyzer-asserts-strong-(linux|mac|win)": {
      "options": {
        "compiler": "dart2analyzer",
        "enable-asserts": true,
        "use-sdk": true
      }
    },
    "analyzer-asserts-weak-(linux|mac|win)": {
      "options": {
        "compiler": "dart2analyzer",
        "enable-asserts": true,
        "use-sdk": true
      }
    }
  },
  "builder_configurations": [
    {
      "builders": [
        "front-end-linux-release-x64",
        "front-end-mac-release-x64",
        "front-end-win-release-x64"
      ],
      "meta": {
        "description": "Runs the cfe tests."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk",
            "dartdevc_test",
            "kernel_platform_files",
            "runtime_kernel"
          ]
        },
        {
          "name": "co19_2 tests",
          "arguments": [
            "-ncfe-${system}",
            "co19_2"
          ],
          "fileset": "front-end",
          "shards": 2
        },
        {
          "name": "sdk tests",
          "arguments": [
            "-ncfe-${system}"
          ],
          "fileset": "front-end",
          "shards": 2
        },
        {
          "name": "unit tests (no git)",
          "arguments": [
            "-ncfe-unittest-asserts-${mode}-${system}",
            "pkg/pkg/(kernel|front_end|fasta)\/(*?)(?<!_git)_test"
          ],
          "fileset": "front-end",
          "shards": 3
        },
        {
          "name": "unit tests suites (no git)",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "testRunner": true,
          "arguments": [
            "--enable-asserts",
            "pkg/front_end/test/unit_test_suites.dart",
            "-ncfe-unittest-asserts-${mode}-${system}",
            "--skipTestsThatRequireGit"
          ],
          "fileset": "front-end",
          "shards": 3
        },
        {
          "name": "unit tests (with git)",
          "arguments": [
            "-ncfe-unittest-asserts-${mode}-${system}",
            "pkg/pkg/(kernel|front_end|fasta)\/(*?)(_git)_test"
          ]
        },
        {
          "name": "unit tests suites (with git)",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "testRunner": true,
          "arguments": [
            "--enable-asserts",
            "pkg/front_end/test/unit_test_suites.dart",
            "-ncfe-unittest-asserts-${mode}-${system}",
            "--onlyTestsThatRequireGit"
          ]
        }
      ]
    },
    {
      "builders": [
        "front-end-nnbd-linux-release-x64",
        "front-end-nnbd-mac-release-x64",
        "front-end-nnbd-win-release-x64"
      ],
      "meta": {
        "description": "Runs the front-end tests with NNBD"
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk",
            "dartdevc_test",
            "kernel_platform_files",
            "runtime_kernel"
          ]
        },
        {
          "name": "weak co19 tests",
          "arguments": [
            "-ncfe-weak-${system}",
            "co19"
          ],
          "fileset": "front-end",
          "shards": 2
        },
        {
          "name": "strong co19 tests",
          "arguments": [
            "-ncfe-strong-${system}",
            "co19"
          ],
          "fileset": "front-end",
          "shards": 2
        },
        {
          "name": "weak sdk tests",
          "arguments": [
            "-ncfe-weak-${system}",
            "corelib",
            "ffi",
            "language",
            "lib",
            "service"
          ]
        },
        {
          "name": "strong sdk tests",
          "arguments": [
            "-ncfe-strong-${system}",
            "corelib",
            "ffi",
            "language",
            "lib"
          ]
        }
      ]
    },
    {
      "builders": [
        "vm-canary-linux-debug"
      ],
      "meta": {
        "description": "This configuration is used to get fast feedback on vm builds."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--arch=ia32,x64",
            "runtime"
          ]
        },
        {
          "name": "vm ia32 tests",
          "arguments": [
            "-ndartk-linux-debug-ia32-canary",
            "vm"
          ]
        },
        {
          "name": "vm x64 tests",
          "arguments": [
            "-ndartk-linux-debug-x64-canary",
            "vm"
          ]
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-android-release-arm",
        "vm-kernel-precomp-android-release-arm_x64",
        "vm-kernel-precomp-android-release-arm64",
        "vm-kernel-precomp-android-release-arm64c"
      ],
      "meta": {
        "description": "This configuration is used by the vm precomp builders on Android."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime",
            "--os=android"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-android-${mode}-${arch}",
            "-j2"
          ],
          "fileset": "vm-kernel",
          "shards": 15
        }
      ]
    },
    {
      "builders": [
        "vm-ffi-android-debug-arm64",
        "vm-ffi-android-debug-arm64c",
        "vm-ffi-android-debug-arm",
        "vm-ffi-android-release-arm64",
        "vm-ffi-android-release-arm64c",
        "vm-ffi-android-release-arm",
        "vm-ffi-android-product-arm64",
        "vm-ffi-android-product-arm64c",
        "vm-ffi-android-product-arm"
      ],
      "meta": {
        "description": "This configuration is used for running FFI tests in JIT-mode on Android."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "--os=android"
          ]
        },
        {
          "name": "ffi tests",
          "arguments": [
            "-ndartk-android-${mode}-${arch}",
            "ffi_2"
          ],
          "fileset": "vm-kernel",
          "shards": 1
        }
      ]
    },
    {
      "builders": [
        "vm-precomp-ffi-qemu-linux-release-arm"
      ],
      "meta": {
        "description": "This configuration is used for running FFI tests on qemu and FFI unit tests."
      },
      "steps": [
        {
          "name": "build run_ffi_unit_tests",
          "script": "tools/build.py",
          "arguments": [
            "--arch=x64",
            "--mode=debug",
            "run_ffi_unit_tests"
          ]
        },
        {
          "name": "ffi unit tests",
          "arguments": [
            "-nvm-ffi-unit-test",
            "ffi_unit"
          ]
        },
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--use-qemu",
            "dart_precompiled_runtime",
            "runtime_kernel"
          ]
        },
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--arch=simarm_x64",
            "gen_snapshot"
          ]
        },
        {
          "name": "ffi tests",
          "arguments": [
            "-ndartkp-linux-${mode}-arm-qemu",
            "ffi_2"
          ]
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-nnbd-linux-debug-x64",
        "vm-kernel-precomp-nnbd-linux-release-simarm64",
        "vm-kernel-precomp-nnbd-linux-release-simarm64c",
        "vm-kernel-precomp-nnbd-linux-release-x64",
        "vm-kernel-precomp-nnbd-linux-release-x64c",
        "vm-kernel-precomp-nnbd-mac-release-simarm64",
        "vm-kernel-precomp-nnbd-mac-release-simarm64c",
        "vm-kernel-precomp-nnbd-win-release-x64",
        "vm-kernel-precomp-nnbd-win-release-x64c"
      ],
      "meta": {
        "description": "This configuration is for the VM AOT nnbd builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "vm nnbd tests in weak mode with asserts",
          "arguments": [
            "-ndartkp-weak-asserts-${system}-${mode}-${arch}",
            "benchmark_smoke",
            "corelib",
            "ffi",
            "language",
            "lib",
            "samples",
            "service",
            "standalone",
            "utils",
            "vm"
          ],
          "fileset": "vm-kernel",
          "shards": 6
        },
        {
          "name": "vm nnbd tests in strong mode",
          "arguments": [
            "-ndartkp-strong-${system}-${mode}-${arch}",
            "benchmark_smoke",
            "corelib",
            "ffi",
            "language",
            "lib",
            "samples",
            "standalone",
            "utils",
            "vm"
          ],
          "fileset": "vm-kernel",
          "shards": 6
        },
        {
          "name": "co19 nnbd tests in strong mode",
          "arguments": [
            "-ndartkp-strong-${system}-${mode}-${arch}",
            "co19"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        },
        {
          "name": "co19 nnbd tests in weak mode with asserts",
          "arguments": [
            "-ndartkp-weak-asserts-${system}-${mode}-${arch}",
            "co19"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-linux-release-x64"
      ],
      "meta": {
        "description": "This configuration is used by the vm kernel precomp linux release builders. (includes co19_2 testing)"
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 6
        },
        {
          "name": "vm co19_2 tests",
          "arguments": [
            "-ndartkp-${system}-${mode}-${arch}",
            "co19_2"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-linux-product-x64",
        "vm-kernel-precomp-linux-product-x64c",
        "vm-kernel-precomp-linux-release-simarm",
        "vm-kernel-precomp-linux-release-simarm64",
        "vm-kernel-precomp-linux-release-simarm64c",
        "vm-kernel-precomp-mac-release-simarm64",
        "vm-kernel-precomp-mac-release-simarm64c",
        "vm-kernel-precomp-win-release-x64",
        "vm-kernel-precomp-win-release-x64c"
      ],
      "meta": {
        "description": "This configuration is used by the vm kernel precomp builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-linux-debug-x64",
        "vm-kernel-precomp-linux-debug-x64c",
        "vm-kernel-precomp-linux-debug-simarm64",
        "vm-kernel-precomp-linux-debug-simarm64c"
      ],
      "meta": {
        "description": "This configuration is used by the vm kernel precomp debug builders. It uses 15 shards for testing to avoid 1 hour shard timeouts."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 15
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-dwarf-linux-product-x64",
        "vm-kernel-precomp-dwarf-linux-product-simarm64"
      ],
      "meta": {
        "description": "This configuration is used by the vm kernel precomp builders with dwarf stack traces."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-dwarf-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-bare-linux-release-x64",
        "vm-kernel-precomp-bare-linux-release-x64c",
        "vm-kernel-precomp-bare-linux-release-simarm",
        "vm-kernel-precomp-bare-linux-release-simarm64",
        "vm-kernel-precomp-bare-linux-release-simarm64c"
      ],
      "meta": {
        "description": "This configuration is used by the vm kernel precomp builders using bare instructions."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-no-bare-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-obfuscate-linux-release-x64",
        "vm-kernel-precomp-obfuscate-linux-release-x64c"
      ],
      "meta": {
        "description": "This configuration is used by the obfuscated vm kernel precomp builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-obfuscate-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-asan-linux-release-ia32",
        "vm-kernel-asan-linux-release-x64",
        "vm-kernel-lsan-linux-release-ia32",
        "vm-kernel-lsan-linux-release-x64",
        "vm-kernel-msan-linux-release-x64",
        "vm-kernel-ubsan-linux-release-ia32",
        "vm-kernel-ubsan-linux-release-x64"
      ],
      "meta": {
        "description": "This configuration is used by the VM/JIT builders with sanitizers."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-${sanitizer}-${system}-${mode}-${arch}"
          ]
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-tsan-linux-release-x64"
      ],
      "meta": {
        "description": "This configuration is used by the VM/JIT builders with sanitizers."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-${sanitizer}-${system}-${mode}-${arch}",
            "vm",
            "standalone_2"
          ],
          "fileset": "vm-kernel",
          "shards": 8
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-asan-linux-release-x64",
        "vm-kernel-precomp-lsan-linux-release-x64",
        "vm-kernel-precomp-msan-linux-release-x64",
        "vm-kernel-precomp-ubsan-linux-release-x64"
      ],
      "meta": {
        "description": "This configuration is used by the VM/AOT builders with sanitizers."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime",
            "runtime_precompiled"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-${sanitizer}-${system}-${mode}-${arch}",
            "vm",
            "standalone_2"
          ]
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-tsan-linux-release-x64"
      ],
      "meta": {
        "description": "This configuration is used by the VM/AOT builders with sanitizers."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime",
            "runtime_precompiled"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-${sanitizer}-${system}-${mode}-${arch}",
            "vm",
            "standalone_2"
          ],
          "fileset": "vm-kernel",
          "shards": 8
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-gcc-linux"
      ],
      "meta": {
        "description": "This configuration builds the VM with GCC."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--mode=all",
            "--arch=all",
            "--no-clang",
            "--no-goma",
            "runtime"
          ]
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-linux-debug-simarm64",
        "vm-kernel-linux-debug-simarm64c",
        "vm-kernel-linux-release-simarm",
        "vm-kernel-linux-release-simarm64",
        "vm-kernel-linux-release-simarm64c",
        "vm-kernel-linux-release-ia32",
        "vm-kernel-win-debug-ia32",
        "vm-kernel-win-debug-x64",
        "vm-kernel-win-debug-x64c",
        "vm-kernel-win-product-x64",
        "vm-kernel-win-product-x64c",
        "vm-kernel-win-release-ia32"
      ],
      "meta": {
        "description": "This configuration is for the kernel builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-nnbd-linux-debug-ia32",
        "vm-kernel-nnbd-linux-debug-x64",
        "vm-kernel-nnbd-linux-debug-x64c",
        "vm-kernel-nnbd-linux-release-ia32",
        "vm-kernel-nnbd-linux-release-simarm",
        "vm-kernel-nnbd-linux-release-simarm64",
        "vm-kernel-nnbd-linux-release-simarm64c",
        "vm-kernel-nnbd-linux-release-x64",
        "vm-kernel-nnbd-linux-release-x64c",
        "vm-kernel-nnbd-mac-debug-x64",
        "vm-kernel-nnbd-mac-debug-x64c",
        "vm-kernel-nnbd-mac-release-x64",
        "vm-kernel-nnbd-mac-release-x64c",
        "vm-kernel-nnbd-win-release-ia32",
        "vm-kernel-nnbd-win-debug-x64",
        "vm-kernel-nnbd-win-debug-x64c",
        "vm-kernel-nnbd-win-release-x64",
        "vm-kernel-nnbd-win-release-x64c"
      ],
      "meta": {
        "description": "This configuration is for the VM nnbd builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk",
            "runtime_kernel"
          ]
        },
        {
          "name": "vm nnbd tests in weak mode with asserts",
          "arguments": [
            "-ndartk-weak-asserts-${system}-${mode}-${arch}",
            "benchmark_smoke",
            "corelib",
            "ffi",
            "language",
            "lib",
            "samples",
            "service",
            "standalone",
            "utils",
            "vm"
          ],
          "fileset": "vm-kernel",
          "shards": 6
        },
        {
          "name": "vm co19 nnbd tests in weak mode with asserts",
          "arguments": [
            "-ndartk-weak-asserts-${system}-${mode}-${arch}",
            "co19"
          ],
          "fileset": "vm-kernel",
          "shards": 8
        },
        {
          "name": "vm nnbd tests in strong mode",
          "arguments": [
            "-ndartk-strong-${system}-${mode}-${arch}",
            "benchmark_smoke",
            "corelib",
            "ffi",
            "language",
            "lib",
            "samples",
            "standalone",
            "utils",
            "vm"
          ],
          "fileset": "vm-kernel",
          "shards": 6
        },
        {
          "name": "vm co19 nnbd tests in strong mode",
          "arguments": [
            "-ndartk-strong-${system}-${mode}-${arch}",
            "co19"
          ],
          "fileset": "vm-kernel",
          "shards": 8
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-linux-product-x64",
        "vm-kernel-linux-product-x64c",
        "vm-kernel-linux-release-x64",
        "vm-kernel-linux-release-x64c",
        "vm-kernel-linux-debug-ia32",
        "vm-kernel-linux-debug-x64",
        "vm-kernel-linux-debug-x64c",
        "vm-kernel-mac-product-x64",
        "vm-kernel-mac-product-x64c",
        "vm-kernel-mac-release-x64",
        "vm-kernel-mac-release-x64c",
        "vm-kernel-mac-debug-x64",
        "vm-kernel-mac-debug-x64c",
        "vm-kernel-win-release-x64",
        "vm-kernel-win-release-x64c"
      ],
      "meta": {
        "description": "This configuration is for the co19_2 kernel builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        },
        {
          "name": "vm co19 tests",
          "arguments": [
            "-ndartk-${system}-${mode}-${arch}",
            "co19_2"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-checked-linux-release-x64",
        "vm-kernel-checked-linux-release-x64c"
      ],
      "meta": {
        "description": "This configuration is for the kernel builder group in checked mode."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-checked-linux-release-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-fuchsia-release-x64"
      ],
      "meta": {
        "description": "This configuration is for the VM fuchsia builder."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--os=fuchsia",
            "--arch=x64,arm64",
            "runtime",
            "create_sdk",
            "fuchsia_test_package",
            "fuchsia_ffi_test_package"
          ]
        }
      ]
    },
    {
      "builders": [
        "cross-vm-linux-release-arm64",
        "cross-vm-linux-release-arm64c"
      ],
      "meta": {
        "description": "This configuration is for the cross arm builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 1
        }
      ]
    },
    {
      "builders": [
        "cross-vm-precomp-linux-release-arm64",
        "cross-vm-precomp-linux-release-arm64c"
      ],
      "meta": {
        "description": "This configuration is for the cross arm AOT builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "dart_precompiled_runtime",
            "gen_snapshot",
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 1
        }
      ]
    },
    {
      "builders": [
        "app-kernel-linux-debug-x64",
        "app-kernel-linux-debug-x64c",
        "app-kernel-linux-product-x64",
        "app-kernel-linux-product-x64c",
        "app-kernel-linux-release-x64",
        "app-kernel-linux-release-x64c"
      ],
      "meta": {
        "description": "This configuration is used by the vm kernel app builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-napp_jitk-linux-${mode}-${arch}"
          ],
          "shards": 6,
          "fileset": "vm-kernel"
        }
      ]
    },
    {
      "builders": [
        "ddc-linux-release-chrome",
        "ddc-win-release-chrome"
      ],
      "meta": {
        "description": "This configuration is used by the ddc builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "dart2js_bot",
            "dartdevc_test"
          ]
        },
        {
          "name": "ddk co19_2 tests",
          "arguments": [
            "-ndartdevk-checked-${system}-release-chrome",
            "co19_2"
          ],
          "shards": 6,
          "fileset": "web_platform"
        },
        {
          "name": "ddc kernel tests",
          "arguments": [
            "-ndartdevk-checked-${system}-release-chrome",
            "language_2",
            "corelib_2",
            "lib_2",
            "dartdevc_2",
            "web_2"
          ]
        },
        {
          "name": "ddc kernel modular tests",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "testRunner": true,
          "arguments": [
            "pkg/dev_compiler/test/modular_suite.dart",
            "-ndartdevk-checked-${system}-release-chrome",
            "--verbose",
            "--use-sdk"
          ]
        },
        {
          "name": "ddk sourcemap tests",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "pkg/dev_compiler/test/sourcemap/sourcemaps_ddk_suite.dart",
            "-rnone"
          ]
        },
        {
          "name": "ddk sourcemap stacktrace tests",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "pkg/dev_compiler/test/sourcemap/stacktrace_ddk_suite.dart",
            "-rnone"
          ]
        },
        {
          "name": "ddc worker tests",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "pkg/dev_compiler/test/worker/worker_test.dart",
            "-rnone"
          ]
        },
        {
          "name": "ddk self host test",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "--enable-asserts",
            "pkg/dev_compiler/bin/dartdevc.dart",
            "-k",
            "-o",
            "out/ReleaseX64/dartdevk.js",
            "pkg/dev_compiler/bin/dartdevc.dart"
          ]
        }
      ]
    },
    {
      "builders": [
        "ddk-linux-release-firefox"
      ],
      "meta": {
        "description": "This configuration is used by the ddc builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "dart2js_bot",
            "dartdevc_test"
          ]
        },
        {
          "name": "ddk co19_2 tests",
          "arguments": [
            "-ndartdevk-checked-${system}-release-firefox",
            "co19_2"
          ],
          "shards": 6,
          "fileset": "web_platform"
        },
        {
          "name": "ddc kernel tests",
          "arguments": [
            "-ndartdevk-checked-${system}-release-firefox",
            "language_2",
            "corelib_2",
            "lib_2",
            "dartdevc_2",
            "web_2"
          ]
        }
      ]
    },
    {
      "builders": [
        "ddc-nnbd-linux-release-chrome"
      ],
      "meta": {
        "description": "This configuration is used by the ddc nnbd builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "dartdevc_test"
          ]
        },
        {
          "name": "ddc weak modular tests",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "testRunner": true,
          "arguments": [
            "pkg/dev_compiler/test/modular_suite_nnbd.dart",
            "-ndartdevk-weak-${system}-release-chrome",
            "--verbose",
            "--use-sdk"
          ]
        },
        {
          "name": "ddc nnbd weak tests",
          "arguments": [
            "-ndartdevk-weak-linux-release-chrome",
            "language",
            "corelib",
            "lib",
            "dartdevc",
            "web"
          ],
          "shards": 5,
          "fileset": "web_platform_nnbd"
        },
        {
          "name": "ddc nnbd weak co19 tests",
          "arguments": [
            "-ndartdevk-weak-linux-release-chrome",
            "co19"
          ],
          "shards": 2,
          "fileset": "web_platform_nnbd"
        },
        {
          "name": "ddc nnbd strong tests",
          "arguments": [
            "-ndartdevk-strong-linux-release-chrome",
            "language",
            "corelib",
            "lib",
            "dartdevc",
            "web"
          ]
        },
        {
          "name": "ddc nnbd strong co19 tests",
          "arguments": [
            "-ndartdevk-strong-linux-release-chrome",
            "co19"
          ]
        }
      ]
    },
    {
      "builders": [
        "ddc-mac-release-chrome"
      ],
      "meta": {
        "description": "This configuration is used by the ddc builder group."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "dart2js_bot",
            "dartdevc_test"
          ]
        },
        {
          "name": "ddc kernel tests",
          "arguments": [
            "-ndartdevk-checked-mac-release-chrome",
            "language_2",
            "corelib_2",
            "lib_2",
            "dartdevc_2",
            "web_2"
          ]
        },
        {
          "name": "ddc kernel modular tests",
          "script": "xcodebuild/ReleaseX64/dart-sdk/bin/dart",
          "testRunner": true,
          "arguments": [
            "pkg/dev_compiler/test/modular_suite.dart",
            "-ndartdevk-checked-mac-release-chrome",
            "--verbose",
            "--use-sdk"
          ]
        },
        {
          "name": "ddk sourcemap tests",
          "script": "xcodebuild/ReleaseX64/dart",
          "arguments": [
            "pkg/dev_compiler/test/sourcemap/sourcemaps_ddk_suite.dart",
            "-rnone"
          ]
        },
        {
          "name": "ddk sourcemap stacktrace tests",
          "script": "xcodebuild/ReleaseX64/dart",
          "arguments": [
            "pkg/dev_compiler/test/sourcemap/stacktrace_ddk_suite.dart",
            "-rnone"
          ]
        },
        {
          "name": "ddc worker tests",
          "script": "xcodebuild/ReleaseX64/dart",
          "arguments": [
            "pkg/dev_compiler/test/worker/worker_test.dart",
            "-rnone"
          ]
        },
        {
          "name": "ddk self host test",
          "script": "xcodebuild/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "--enable-asserts",
            "pkg/dev_compiler/bin/dartdevc.dart",
            "-k",
            "-o",
            "xcodebuild/ReleaseX64/dartdevk.js",
            "pkg/dev_compiler/bin/dartdevc.dart"
          ]
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-optcounter-threshold-linux-release-ia32",
        "vm-kernel-optcounter-threshold-linux-release-x64",
        "vm-kernel-optcounter-threshold-linux-release-x64c",
        "vm-kernel-optcounter-threshold-linux-release-simarm",
        "vm-kernel-optcounter-threshold-linux-release-simarm64",
        "vm-kernel-optcounter-threshold-linux-release-simarm64c"
      ],
      "meta": {
        "description": "This is the configuration for the kernel optcounter builders, under the vm-kernel group. They run the same tests as the ordinary VM kernel builders, but add extra options to the vm."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-optcounter-linux-release-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-reload-linux-debug-x64",
        "vm-kernel-reload-linux-debug-x64c",
        "vm-kernel-reload-linux-release-x64",
        "vm-kernel-reload-linux-release-x64c"
      ],
      "meta": {
        "description": "This is the configuration for the kernel hot reload builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-reload-${system}-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-reload-rollback-linux-debug-x64",
        "vm-kernel-reload-rollback-linux-debug-x64c",
        "vm-kernel-reload-rollback-linux-release-x64",
        "vm-kernel-reload-rollback-linux-release-x64c"
      ],
      "meta": {
        "description": "This is the configuration for kernel reload rollback builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "runtime_kernel"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartk-reload-rollback-linux-${mode}-${arch}"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "dart2js-unit-linux-x64-release"
      ],
      "meta": {
        "description": "Runs the dart2js unit tests."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk"
          ]
        },
        {
          "name": "dart2js modular tests",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "testRunner": true,
          "arguments": [
            "pkg/compiler/tool/modular_test_suite.dart",
            "-nunittest-asserts-no-sdk-linux",
            "--verbose",
            "--use-sdk"
          ]
        },
        {
          "name": "js_runtime unit tests",
          "arguments": [
            "-nunittest-asserts-no-sdk-linux",
            "pkg//js_runtime/"
          ]
        },
        {
          "name": "dart2js unit tests",
          "arguments": [
            "-nunittest-asserts-no-sdk-linux",
            "pkg//compiler/"
          ]
        }
      ]
    },
    {
      "builders": [
        "dart2js-strong-hostasserts-linux-ia32-d8"
      ],
      "meta": {
        "description": "dart2js-d8 tests with assertions during compilation"
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "dart2js_bot"
          ]
        },
        {
          "name": "dart2js tests",
          "arguments": [
            "-ndart2js-hostasserts-linux-ia32-d8",
            "--dart2js-batch",
            "--exclude_suite=observatory_ui"
          ],
          "shards": 6,
          "fileset": "web_platform_hostasserts"
        },
        {
          "name": "dart2js co19_2 tests",
          "arguments": [
            "-ndart2js-hostasserts-linux-ia32-d8",
            "--dart2js-batch",
            "co19_2"
          ],
          "shards": 6,
          "fileset": "web_platform_hostasserts"
        },
        {
          "name": "dart2js package tests",
          "arguments": [
            "-ndart2js-hostasserts-linux-ia32-d8",
            "--dart2js-batch",
            "pkg"
          ]
        },
        {
          "name": "dart2js observatory-ui tests",
          "arguments": [
            "-ndart2js-hostasserts-linux-ia32-d8-unsound",
            "--dart2js-batch",
            "observatory_ui"
          ]
        },
        {
          "name": "dart2js extra tests",
          "arguments": [
            "-ndart2js-hostasserts-linux-ia32-d8",
            "--dart2js-batch",
            "web_2"
          ]
        }
      ]
    },
    {
      "builders": [
        "dart2js-strong-linux-x64-chrome",
        "dart2js-strong-linux-x64-firefox",
        "dart2js-strong-mac-x64-chrome",
        "dart2js-strong-mac-x64-safari",
        "dart2js-strong-win-x64-chrome",
        "dart2js-strong-win-x64-edge",
        "dart2js-strong-win-x64-firefox",
        "dart2js-strong-win-x64-ie11"
      ],
      "meta": {
        "description": "dart2js browser tests for Dart 2.0."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk"
          ]
        },
        {
          "name": "dart2js tests",
          "arguments": [
            "-ndart2js-${system}-${runtime}",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "--exclude_suite=observatory_ui"
          ],
          "shards": 6,
          "fileset": "web_platform"
        },
        {
          "name": "dart2js co19_2 tests",
          "arguments": [
            "-ndart2js-${system}-${runtime}",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "co19_2"
          ],
          "shards": 6,
          "fileset": "web_platform"
        },
        {
          "name": "dart2js package tests",
          "arguments": [
            "-ndart2js-${system}-${runtime}",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "pkg"
          ]
        },
        {
          "name": "dart2js observatory-ui tests",
          "arguments": [
            "-ndart2js-${system}-${runtime}-unsound",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "observatory_ui"
          ]
        },
        {
          "name": "dart2js extra tests",
          "arguments": [
            "-ndart2js-${system}-${runtime}",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "web_2"
          ]
        }
      ]
    },
    {
      "builders": [
        "dart2js-minified-strong-linux-x64-d8"
      ],
      "meta": {
        "description": "dart2js tests for Dart 2.0."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk"
          ]
        },
        {
          "name": "dart2js tests",
          "arguments": [
            "-ndart2js-minified-linux-d8",
            "--dart2js-batch",
            "--exclude_suite=observatory_ui"
          ],
          "shards": 6,
          "fileset": "web_platform"
        },
        {
          "name": "dart2js package tests",
          "arguments": [
            "-ndart2js-minified-linux-d8",
            "--dart2js-batch",
            "pkg"
          ]
        },
        {
          "name": "dart2js observatory-ui tests",
          "arguments": [
            "-ndart2js-minified-linux-d8-unsound",
            "--dart2js-batch",
            "observatory_ui"
          ]
        },
        {
          "name": "dart2js extra tests",
          "arguments": [
            "-ndart2js-minified-linux-d8",
            "--dart2js-batch",
            "web_2"
          ]
        },
        {
          "name": "dart2js production tests",
          "arguments": [
            "-ndart2js-production-linux-d8",
            "--dart2js-batch",
            "--exclude_suite=observatory_ui"
          ],
          "shards": 6,
          "fileset": "web_platform"
        },
        {
          "name": "dart2js production extra tests",
          "arguments": [
            "-ndart2js-production-linux-d8",
            "--dart2js-batch",
            "web_2"
          ]
        },
        {
          "name": "dart2js -O0 smoke tests",
          "arguments": [
            "-ndart2js-o0-linux-d8",
            "--dart2js-batch",
            "dart2js_2"
          ]
        },
        {
          "name": "dart2js --no-legacy-javascript smoke tests",
          "arguments": [
            "-ndart2js-modern-linux-d8",
            "--dart2js-batch",
            "dart2js_2"
          ]
        },
        {
          "name": "dart2js d8 fragment merging tests",
          "arguments": [
            "-ndart2js-minified-hostasserts-weak-max-fragments-linux-x64-d8",
            "--dart2js-batch",
            "web/deferred/"
          ],
          "shards": 1,
          "fileset": "web_platform_hostasserts"
        }
      ]
    },
    {
      "builders": [
        "dart2js-csp-minified-linux-x64-chrome"
      ],
      "meta": {
        "description": "dart2js tests in csp and minified mode."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk"
          ]
        },
        {
          "name": "dart2js tests",
          "arguments": [
            "-ndart2js-minified-csp-linux-chrome",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "--exclude_suite=observatory_ui"
          ],
          "shards": 4,
          "fileset": "web_platform"
        },
        {
          "name": "dart2js package tests",
          "arguments": [
            "-ndart2js-minified-csp-linux-chrome",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "pkg"
          ]
        },
        {
          "name": "dart2js observatory-ui tests",
          "arguments": [
            "-ndart2js-minified-csp-linux-chrome-unsound",
            "--dart2js-batch",
            "--reset-browser-configuration",
            "observatory_ui"
          ]
        },
        {
          "name": "dart2js extra tests",
          "arguments": [
            "-ndart2js-minified-csp-linux-chrome",
            "--dart2js-batch",
            "web_2"
          ]
        },
        {
          "name": "dart2js d8 fragment merging tests",
          "arguments": [
            "-ndart2js-minified-csp-max-fragments-linux-chrome",
            "--dart2js-batch",
            "web/deferred/"
          ]
        }
      ]
    },
    {
      "builders": [
        "dart2js-nnbd-linux-x64-chrome"
      ],
      "meta": {
        "description": "dart2js tests for NNBD."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk",
            "dart2js_bot"
          ]
        },
        {
          "name": "dart2js nnbd weak d8 tests",
          "arguments": [
            "-ndart2js-hostasserts-weak-linux-x64-d8",
            "--dart2js-batch",
            "language",
            "corelib"
          ],
          "shards": 6,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd weak d8 fragment merging tests",
          "arguments": [
            "-ndart2js-hostasserts-weak-max-fragments-linux-x64-d8",
            "--dart2js-batch",
            "web/deferred/"
          ],
          "shards": 1,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd weak chrome tests",
          "arguments": [
            "-ndart2js-hostasserts-weak-linux-x64-chrome",
            "--dart2js-batch",
            "web"
          ],
          "shards": 3,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd weak lib tests",
          "arguments": [
            "-ndart2js-hostasserts-weak-linux-x64-chrome",
            "--dart2js-batch",
            "lib"
          ],
          "shards": 3,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd weak co19 tests",
          "arguments": [
            "-ndart2js-hostasserts-weak-linux-x64-chrome",
            "--dart2js-batch",
            "co19"
          ],
          "shards": 6,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd strong d8 tests",
          "arguments": [
            "-ndart2js-hostasserts-strong-linux-x64-d8",
            "--dart2js-batch",
            "language",
            "corelib"
          ],
          "shards": 6,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd strong d8 fragment merging tests",
          "arguments": [
            "-ndart2js-hostasserts-strong-max-fragments-linux-x64-d8",
            "--dart2js-batch",
            "web/deferred/"
          ],
          "shards": 1,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd strong chrome tests",
          "arguments": [
            "-ndart2js-hostasserts-strong-linux-x64-chrome",
            "--dart2js-batch",
            "web"
          ],
          "shards": 3,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd strong lib tests",
          "arguments": [
            "-ndart2js-hostasserts-strong-linux-x64-chrome",
            "--dart2js-batch",
            "lib"
          ],
          "shards": 3,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd strong co19 tests",
          "arguments": [
            "-ndart2js-hostasserts-strong-linux-x64-chrome",
            "--dart2js-batch",
            "co19"
          ],
          "shards": 6,
          "fileset": "web_platform_hostasserts_nnbd"
        },
        {
          "name": "dart2js nnbd unit tests",
          "arguments": [
            "-nunittest-weak-asserts-no-sdk-linux",
            "pkg//compiler/"
          ]
        }
      ]
    },
    {
      "builders": [
        "dart-sdk-linux"
      ],
      "meta": {
        "description": "This configuration is used by the linux sdk builder. The difference between this configuration and the other sdk builder configurations is that this one also generates the api docs."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--arch=ia32,x64,arm,arm64",
            "--mode=release",
            "create_sdk"
          ]
        },
        {
          "name": "upload sdk",
          "script": "tools/bots/dart_sdk.py"
        },
        {
          "name": "run AOT and Exe smoke tests",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "tools/bots/aot_smoke_tests.dart"
          ]
        },
        {
          "name": "build api docs",
          "script": "tools/bots/dart_sdk.py",
          "arguments": [
            "api_docs"
          ]
        }
      ]
    },
    {
      "builders": [
        "dart-sdk-mac"
      ],
      "meta": {
        "description": "This configuration is used by the sdk-builders for MacOS."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--arch=x64",
            "--mode=release",
            "create_sdk"
          ],
          "environment": {
            "DART_GN_ARGS": "mac_use_goma_rbe=true"
          }
        },
        {
          "name": "upload sdk",
          "script": "tools/bots/dart_sdk.py"
        },
        {
          "name": "run AOT and Exe smoke tests",
          "script": "xcodebuild/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "tools/bots/aot_smoke_tests.dart"
          ]
        }
      ]
    },
    {
      "builders": [
        "dart-sdk-win"
      ],
      "meta": {
        "description": "This configuration is used by the sdk-builders for Windows. It also adds CQ coverage for building on Windows."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--arch=ia32,x64",
            "--mode=release",
            "create_sdk",
            "runtime_kernel"
          ]
        },
        {
          "name": "upload sdk",
          "script": "tools/bots/dart_sdk.py"
        },
        {
          "name": "run AOT and Exe smoke tests",
          "script": "out/ReleaseX64/dart-sdk/bin/dart.exe",
          "arguments": [
            "tools/bots/aot_smoke_tests.dart"
          ]
        }
      ]
    },
    {
      "builders": [
        "debianpackage-linux"
      ],
      "meta": {
        "description": "This configuration is used by the debianpackage-builder."
      },
      "steps": [
        {
          "name": "build debian package",
          "script": "tools/linux_dist_support/run_debian_build.sh",
          "arguments": []
        },
        {
          "name": "upload debian packages",
          "script": "tools/linux_dist_support/upload_debian_packages.py",
          "arguments": []
        }
      ]
    },
    {
      "builders": [
        "analyzer-linux-release",
        "analyzer-mac-release",
        "analyzer-win-release"
      ],
      "meta": {
        "description": "This configuration is used by the analyzer builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk"
          ]
        },
        {
          "name": "analyzer unit tests",
          "arguments": [
            "-nanalyzer-unittest-asserts-${mode}-${system}",
            "pkg/analyzer"
          ],
          "shards": 2,
          "fileset": "analyzer_unit_tests"
        },
        {
          "name": "analysis_server unit tests",
          "arguments": [
            "-nanalyzer-unittest-asserts-${mode}-${system}",
            "pkg/analysis_server"
          ],
          "shards": 2,
          "fileset": "analyzer_unit_tests"
        },
        {
          "name": "analyze tests enable-asserts",
          "arguments": [
            "-nanalyzer-asserts-${system}"
          ]
        },
        {
          "name": "analyze pkg tests enable-asserts",
          "arguments": [
            "-nanalyzer-asserts-${system}",
            "pkg"
          ]
        },
        {
          "name": "analyzer_cli unit tests",
          "arguments": [
            "-nanalyzer-unittest-asserts-${mode}-${system}",
            "pkg/analyzer_cli"
          ]
        },
        {
          "name": "analyzer_plugin unit tests",
          "arguments": [
            "-nanalyzer-unittest-asserts-${mode}-${system}",
            "pkg/analyzer_plugin"
          ]
        },
        {
          "name": "nnbd_migration unit tests",
          "arguments": [
            "-nanalyzer-unittest-asserts-${mode}-${system}",
            "pkg/nnbd_migration"
          ],
          "shards": 2,
          "fileset": "analyzer_unit_tests"
        },
        {
          "name": "analyze tests co19_2",
          "arguments": [
            "-nanalyzer-asserts-${system}",
            "co19_2"
          ]
        }
      ]
    },
    {
      "builders": [
        "analyzer-nnbd-linux-release",
        "analyzer-nnbd-mac-release",
        "analyzer-nnbd-win-release"
      ],
      "meta": {
        "description": "This configuration is used by the nnbd analyzer builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk"
          ]
        },
        {
          "name": "analyze nnbd strong tests enable-asserts",
          "arguments": [
            "-nanalyzer-asserts-strong-${system}",
            "corelib",
            "ffi",
            "language",
            "lib",
            "standalone"
          ]
        },
        {
          "name": "analyze nnbd weak tests enable-asserts",
          "arguments": [
            "-nanalyzer-asserts-weak-${system}",
            "corelib",
            "ffi",
            "language",
            "lib",
            "service",
            "standalone"
          ]
        },
        {
          "name": "analyze nnbd strong co19 tests",
          "arguments": [
            "-nanalyzer-asserts-strong-${system}",
            "co19"
          ]
        },
        {
          "name": "analyze nnbd weak co19 tests",
          "arguments": [
            "-nanalyzer-asserts-weak-${system}",
            "co19"
          ]
        }
      ]
    },
    {
      "builders": [
        "analyzer-analysis-server-linux"
      ],
      "meta": {
        "description": "Analyze repository packages."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk"
          ]
        },
        {
          "name": "analyze runtime/tools/dartfuzz",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "runtime/tools/dartfuzz"
          ]
        },
        {
          "name": "analyze runtime/tests/concurrency/generate_stress_test.dart",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "runtime/tests/concurrency/generate_stress_test.dart"
          ]
        },
        {
          "name": "analyze runtime/tests/concurrency/run_stress_test_shards.dart",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "runtime/tests/concurrency/run_stress_test_shards.dart"
          ]
        },
        {
          "name": "analyze pkg/analysis_server",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/analysis_server"
          ]
        },
        {
          "name": "analyze pkg/analysis_server_client",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/analysis_server_client"
          ]
        },
        {
          "name": "analyze pkg/analyzer",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/analyzer"
          ]
        },
        {
          "name": "analyze pkg/analyzer_cli",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/analyzer_cli"
          ]
        },
        {
          "name": "analyze pkg/analyzer_plugin",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/analyzer_plugin"
          ]
        },
        {
          "name": "analyze pkg/async_helper",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/async_helper"
          ]
        },
        {
          "name": "analyze pkg/build_integration",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/build_integration"
          ]
        },
        {
          "name": "analyze pkg/compiler",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/compiler"
          ]
        },
        {
          "name": "analyze pkg/dartdev",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/dartdev"
          ]
        },
        {
          "name": "analyze pkg/dart2js_tools",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/dart2js_tools"
          ]
        },
        {
          "name": "analyze pkg/dart_internal",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/dart_internal"
          ]
        },
        {
          "name": "analyze pkg/dev_compiler",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/dev_compiler"
          ]
        },
        {
          "name": "analyze pkg/expect",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/expect"
          ]
        },
        {
          "name": "analyze pkg/front_end",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/front_end"
          ]
        },
        {
          "name": "analyze pkg/js",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/js"
          ]
        },
        {
          "name": "analyze pkg/js_ast",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/js_ast"
          ]
        },
        {
          "name": "analyze pkg/kernel",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/kernel"
          ]
        },
        {
          "name": "analyze pkg/meta",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/meta"
          ]
        },
        {
          "name": "analyze pkg/native_stack_traces",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "pkg/native_stack_traces"
          ]
        },
        {
          "name": "analyze pkg/smith",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/smith"
          ]
        },
        {
          "name": "analyze pkg/sourcemap_testing",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/sourcemap_testing"
          ]
        },
        {
          "name": "analyze pkg/status_file",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/status_file"
          ]
        },
        {
          "name": "analyze pkg/telemetry",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/telemetry"
          ]
        },
        {
          "name": "analyze pkg/test_runner",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/test_runner"
          ]
        },
        {
          "name": "analyze pkg/testing",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/testing"
          ]
        },
        {
          "name": "analyze pkg/vm",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/vm"
          ]
        },
        {
          "name": "analyze pkg/vm_service",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/vm_service"
          ]
        },
        {
          "name": "analyze pkg/vm_snapshot_analysis",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/vm_snapshot_analysis"
          ]
        },
        {
          "name": "analyze pkg/dds",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "--fatal-infos",
            "pkg/dds"
          ]
        },
        {
          "name": "analyze runtime/observatory",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "analyze",
            "runtime/observatory"
          ]
        },
        {
          "name": "dartanalyzer --batch tests",
          "arguments": [
            "-nanalyzer-${system}"
          ]
        },
        {
          "name": "dartanalyzer --batch pkg tests",
          "arguments": [
            "-nanalyzer-${system}",
            "pkg"
          ]
        }
      ]
    },
    {
      "builders": [
        "pkg-linux-release",
        "pkg-win-release",
        "pkg-mac-release"
      ],
      "meta": {
        "description": "This configuration is used by the release pkg builders."
      },
      "steps": [
        {
          "name": "validate pkg/ pubspec files",
          "script": "tools/sdks/dart-sdk/bin/dart",
          "arguments": [
            "tools/package_deps/bin/package_deps.dart"
          ]
        },
        {
          "name": "validate .dart_tool/package_config.json",
          "script": "tools/sdks/dart-sdk/bin/dart",
          "arguments": [
            "tools/generate_package_config.dart",
            "--check"
          ]
        },
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk",
            "dartdevc_test"
          ]
        },
        {
          "name": "validate SDK API docs",
          "script": "out/ReleaseX64/dart-sdk/bin/dartdoc",
          "arguments": [
            "--exclude",
            "dart:ffi,dart:html,dart:web_sql,dart:web_audio,dart:svg,dart:indexed_db",
            "--sdk-docs",
            "--no-generate-docs"
          ],
          "comments1": "TODO(devoncarew): add --errors=unresolved-doc-reference above to fail on unresolved doc references",
          "comments2": "ambiguous-doc-reference, ambiguous-reexport, broken-link, deprecated, no-library-level-docs, unknown-directive, unknown-macro"
        },
        {
          "name": "validate SDK API data-driven fixes",
          "script": "out/ReleaseX64/dart-sdk/bin/dart",
          "arguments": [
            "fix",
            "--compare-to-golden",
            "tests/lib/fix_data_tests"
          ]
        },
        {
          "name": "package unit tests",
          "arguments": [
            "-nunittest-asserts-${mode}-${system}",
            "pkg/pkg/(?!(analyzer*|analysis_server|compiler|js_runtime|front_end|kernel|nnbd_migration)/)"
          ]
        },
        {
          "name": "third_party pkg_tested unit tests",
          "arguments": [
            "-nunittest-asserts-${mode}-${system}",
            "pkg_tested"
          ]
        },
        {
          "name": "pub integration tests",
          "script": "tools/bots/pub_integration_test.py",
          "arguments": [
            "--mode=release"
          ]
        }
      ]
    },
    {
      "builders": [
        "pkg-linux-debug"
      ],
      "meta": {
        "description": "This configuration is used by the debug pkg builders."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "create_sdk",
            "dartdevc_test"
          ]
        },
        {
          "name": "package unit tests",
          "arguments": [
            "-nunittest-asserts-${mode}-${system}",
            "pkg/pkg/(?!(analyzer*|analysis_server|compiler|js_runtime|front_end|kernel|nnbd_migration)/)"
          ]
        },
        {
          "name": "third_party pkg_tested unit tests",
          "arguments": [
            "-nunittest-asserts-${mode}-${system}",
            "pkg_tested"
          ]
        },
        {
          "name": "pub integration tests",
          "script": "tools/bots/pub_integration_test.py",
          "arguments": [
            "--mode=debug"
          ]
        }
      ]
    },
    {
      "builders": [
        "benchmark-linux"
      ],
      "meta": {
        "description": "Verify benchmarks build and run correctly.",
        "owner": "sortie@google.com"
      },
      "steps": [
        {
          "name": "see this step for details on what this bot does",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "noop"
          ]
        },
        {
          "name": "remove out directory to do a clean linux-ia32 build",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "clean"
          ]
        },
        {
          "name": "build linux-ia32 for benchmarking",
          "script": "tools/build.py",
          "arguments": [
            "--mode=release",
            "--arch=ia32",
            "create_sdk",
            "runtime",
            "dart2js_platform.dill",
            "dart2js_nnbd_strong_platform.dill",
            "kernel-service.dart.snapshot"
          ]
        },
        {
          "name": "archive linux-ia32 for benchmarking",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "linux-ia32-archive"
          ]
        },
        {
          "name": "try linux-ia32 benchmarking",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "linux-ia32-benchmark"
          ]
        },
        {
          "name": "remove out directory to do a clean linux-x64 build",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "clean"
          ]
        },
        {
          "name": "build linux-x64 for benchmarking",
          "script": "tools/build.py",
          "arguments": [
            "--mode=release",
            "--arch=x64",
            "create_sdk",
            "runtime",
            "gen_snapshot",
            "dart_precompiled_runtime",
            "dart2js_platform.dill",
            "dart2js_nnbd_strong_platform.dill",
            "kernel-service.dart.snapshot",
            "dartdevc_test"
          ]
        },
        {
          "name": "archive linux-x64 for benchmarking",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "linux-x64-archive"
          ]
        },
        {
          "name": "try linux-x64 benchmarking",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "linux-x64-benchmark"
          ]
        },
        {
          "name": "remove out directory",
          "script": "tools/bots/try_benchmarks.sh",
          "arguments": [
            "clean"
          ]
        }
      ]
    },
    {
      "builders": [
        "flutter-analyze"
      ],
      "meta": {
        "description": "This configuration is used for analyzing flutter."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--mode=release",
            "--arch=x64",
            "create_sdk"
          ]
        },
        {
          "name": "analyze flutter/engine",
          "script": "tools/bots/flutter/analyze_flutter_engine.sh"
        },
        {
          "name": "analyze flutter/flutter",
          "script": "tools/bots/flutter/analyze_flutter_flutter.sh"
        }
      ]
    },
    {
      "builders": [
        "flutter-frontend"
      ],
      "meta": {
        "description": "This configuration is used for running frontend tests on flutter code."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--mode=release",
            "--arch=x64",
            "create_sdk"
          ]
        },
        {
          "name": "compile flutter tests",
          "script": "tools/bots/flutter/compile_flutter.sh",
          "testRunner": true,
          "arguments": [
            "-nflutter-frontend"
          ]
        }
      ]
    },
    {
      "builders": [
        "frontend-weekly"
      ],
      "meta": {
        "description": "This configuration is used for running slow frontend tests for instance weekly."
      },
      "steps": [
        {
          "name": "build dart",
          "script": "tools/build.py",
          "arguments": [
            "--mode=release",
            "--arch=x64",
            "create_sdk"
          ]
        },
        {
          "name": "run tests",
          "script": "tools/bots/flutter/compile_flutter.sh",
          "arguments": [
            "--weeklyTest"
          ]
        }
      ]
    },
    {
      "builders": [
        "fuzz-linux"
      ],
      "meta": {
        "description": "This configuration is used for fuzz testing."
      },
      "steps": [
        {
          "name": "build dart (aot and jit)",
          "script": "tools/build.py",
          "arguments": [
            "--mode=debug,release",
            "--arch=x64,x64c,simarm64,simarm64c",
            "runtime",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "build dart (jit)",
          "script": "tools/build.py",
          "arguments": [
            "--mode=debug,release",
            "--arch=ia32,simarm",
            "runtime"
          ]
        },
        {
          "name": "make a fuzz",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "runtime/tools/dartfuzz/dartfuzz_test.dart",
            "--isolates",
            "8",
            "--no-show-stats",
            "--time",
            "2700"
          ],
          "shards": 100,
          "fileset": "fuzzer"
        }
      ]
    },
    {
      "builders": [
        "iso-stress-linux"
      ],
      "meta": {
        "description": "This configuration is used for isolate stress testing."
      },
      "steps": [
        {
          "name": "Build Dart VM - JIT and AOT",
          "script": "tools/build.py",
          "arguments": [
            "--mode=debug,release",
            "--arch=x64",
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "Build Dart VM - JIT and AOT (Release TSAN)",
          "script": "tools/build.py",
          "arguments": [
            "--mode=release",
            "--arch=x64",
            "--sanitizer=tsan",
            "runtime_kernel",
            "dart_precompiled_runtime"
          ]
        },
        {
          "name": "Generate Isolate Stress Test",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "runtime/tests/concurrency/generate_stress_test.dart"
          ]
        },
        {
          "name": "Generate Isolate Stress Test - JIT Dill",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "pkg/vm/bin/gen_kernel.dart",
            "--platform=out/ReleaseX64/vm_platform_strong.dill",
            "--no-aot",
            "--no-sound-null-safety",
            "-o", "runtime/tests/concurrency/generated_stress_test.dart.jit.dill",
            "runtime/tests/concurrency/generated_stress_test.dart"
          ]
        },
        {
          "name": "Generate Isolate Stress Test - JIT Dill NNBD",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "pkg/vm/bin/gen_kernel.dart",
            "--platform=out/ReleaseX64/vm_platform_strong.dill",
            "--no-aot",
            "-o", "runtime/tests/concurrency/generated_stress_test_nnbd.dart.jit.dill",
            "runtime/tests/concurrency/generated_stress_test_nnbd.dart"
          ]
        },
        {
          "name": "Generate Isolate Stress Test - AOT Dill",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "pkg/vm/bin/gen_kernel.dart",
            "--platform=out/ReleaseX64/vm_platform_strong.dill",
            "--aot",
            "--no-sound-null-safety",
            "-o", "runtime/tests/concurrency/generated_stress_test.dart.aot.dill",
            "runtime/tests/concurrency/generated_stress_test.dart"
          ]
        },
        {
          "name": "Generate Isolate Stress Test - AOT Dill NNBD",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "pkg/vm/bin/gen_kernel.dart",
            "--platform=out/ReleaseX64/vm_platform_strong.dill",
            "--aot",
            "-o", "runtime/tests/concurrency/generated_stress_test_nnbd.dart.aot.dill",
            "runtime/tests/concurrency/generated_stress_test_nnbd.dart"
          ]
        },
        {
          "name": "Run Isolate Stress Tests",
          "script": "out/ReleaseX64/dart",
          "arguments": [
            "runtime/tests/concurrency/run_stress_test_shards.dart"
          ],
          "shards": 10,
          "fileset": "vm-kernel"
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-linux-debug-simarm_x64",
        "vm-kernel-precomp-linux-release-simarm_x64"
      ],
      "meta": {
        "description": "This configuration runs tests for the simarm_x64 architecture."
      },
      "steps": [
        {
          "name": "build dart for simarm_x64",
          "script": "tools/build.py",
          "arguments": [
            "gen_snapshot"
          ]
        },
        {
          "name": "build dart for simarm",
          "script": "tools/build.py",
          "arguments": [
            "--arch=simarm",
            "dart_precompiled_runtime",
            "vm_platform"
          ]
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-${system}-${mode}-simarm-crossword"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    },
    {
      "builders": [
        "vm-kernel-precomp-nnbd-linux-debug-simarm_x64",
        "vm-kernel-precomp-nnbd-linux-release-simarm_x64"
      ],
      "meta": {
        "description": "This configuration runs tests for the simarm_x64 architecture."
      },
      "steps": [
        {
          "name": "build dart for simarm_x64",
          "script": "tools/build.py",
          "arguments": [
            "gen_snapshot"
          ]
        },
        {
          "name": "build dart for simarm",
          "script": "tools/build.py",
          "arguments": [
            "--arch=simarm",
            "dart_precompiled_runtime",
            "vm_platform"
          ]
        },
        {
          "name": "vm weak tests",
          "arguments": [
            "-ndartkp-weak-asserts-${system}-${mode}-simarm-crossword",
            "benchmark_smoke",
            "corelib",
            "ffi",
            "language",
            "lib",
            "samples",
            "standalone",
            "utils",
            "vm"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        },
        {
          "name": "vm tests",
          "arguments": [
            "-ndartkp-strong-${system}-${mode}-simarm-crossword",
            "benchmark_smoke",
            "corelib",
            "ffi",
            "language",
            "lib",
            "samples",
            "standalone",
            "utils",
            "vm"
          ],
          "fileset": "vm-kernel",
          "shards": 10
        }
      ]
    }
  ],
  "sanitizer_options": {
    "ASAN_OPTIONS": "check_initialization_order=true:handle_segv=0:detect_leaks=1:detect_stack_use_after_return=0:disable_coredump=0:abort_on_error=1",
    "LSAN_OPTIONS": "check_initialization_order=true:handle_segv=0:detect_leaks=1:detect_stack_use_after_return=0:disable_coredump=0:abort_on_error=1",
    "MSAN_OPTIONS": "check_initialization_order=true:handle_segv=0:detect_leaks=1:detect_stack_use_after_return=0:disable_coredump=0:abort_on_error=1",
    "TSAN_OPTIONS": "handle_segv=0:disable_coredump=0:abort_on_error=1:report_thread_leaks=0",
    "UBSAN_OPTIONS": "handle_segv=0:disable_coredump=0:halt_on_error=1:print_stacktrace=1"
  },
  "sanitizer_symbolizer": {
    "linux": "buildtools/linux-x64/clang/bin/llvm-symbolizer",
    "macos": "buildtools/mac-x64/clang/bin/llvm-symbolizer"
  }
}