test-cpu-prof-worker-argv multiple assertion errors

[rickyes]

I have encountered this error twice.

• Test: sequential/test-cpu-prof-worker-argv
• Platform: macOS
• Console Output:

=== release test-cpu-prof-worker-argv ===
Path: sequential/test-cpu-prof-worker-argv
--- stderr ---
assert.js:103
  throw new AssertionError(obj);
  ^

AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
    at verifyFrames (/Users/runner/runners/2.263.0/work/node/node/test/common/cpu-prof.js:34:10)
    at Object.<anonymous> (/Users/runner/runners/2.263.0/work/node/node/test/sequential/test-cpu-prof-worker-argv.js:37:3)
    at Module._compile (internal/modules/cjs/loader.js:1217:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1238:10)
    at Module.load (internal/modules/cjs/loader.js:1066:32)
    at Function.Module._load (internal/modules/cjs/loader.js:954:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
    at internal/main/run_main_module.js:17:47 {
  generatedMessage: true,
  code: 'ERR_ASSERTION',
  actual: [],
  expected: [],
  operator: 'notDeepStrictEqual'
}

• Build Links: https://github.com/nodejs/node/pull/33991/checks?check_run_id=799470969

[Trott]

Seeing it on GitHub Actions CI for macOS too.

https://github.com/nodejs/node/pull/34096/checks?check_run_id=815269380

  Path: sequential/test-cpu-prof-worker-argv
--- stderr ---
assert.js:103
  throw new AssertionError(obj);
  ^

AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
    at verifyFrames (/Users/runner/runners/2.263.0/work/node/node/test/common/cpu-prof.js:34:10)
    at Object.<anonymous> (/Users/runner/runners/2.263.0/work/node/node/test/sequential/test-cpu-prof-worker-argv.js:37:3)
    at Module._compile (internal/modules/cjs/loader.js:1217:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1238:10)
    at Module.load (internal/modules/cjs/loader.js:1066:32)
    at Function.Module._load (internal/modules/cjs/loader.js:954:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
    at internal/main/run_main_module.js:17:47 {
  generatedMessage: true,
  code: 'ERR_ASSERTION',
  actual: [],
  expected: [],
  operator: 'notDeepStrictEqual'
}

There is a lot of stuff in stdout but GitHub Actions does not make copy/paste for large things easy. (It's entirely possible there is a way to make it easy, but I"m unfamiliar with the interface for the most part.) Here's how it starts:

[
  {
    id: 1,
    callFrame: {
      functionName: '(root)',
      scriptId: '0',
      url: '',
      lineNumber: -1,
      columnNumber: -1
    },
    hitCount: 0,
    children: [ 2, 3, 10, 19, 20, 38 ]
  },
  {
    id: 2,
    callFrame: {
      functionName: '(program)',
      scriptId: '0',
      url: '',
      lineNumber: -1,

[Trott]

Again on macOS CI today:

https://ci.nodejs.org/job/node-test-commit-osx/37895/nodes=osx1015/console

Details

00:23:31 not ok 3106 sequential/test-cpu-prof-worker-argv
00:23:31   ---
00:23:31   duration_ms: 0.821
00:23:31   severity: fail
00:23:31   exitcode: 1
00:23:31   stack: |-
00:23:31     
00:23:31     [
00:23:31       {
00:23:31         id: 1,
00:23:31         callFrame: {
00:23:31           functionName: '(root)',
00:23:31           scriptId: '0',
00:23:31           url: '',
00:23:31           lineNumber: -1,
00:23:31           columnNumber: -1
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 2, 3, 6, 24, 25, 28 ]
00:23:31       },
00:23:31       {
00:23:31         id: 2,
00:23:31         callFrame: {
00:23:31           functionName: '(program)',
00:23:31           scriptId: '0',
00:23:31           url: '',
00:23:31           lineNumber: -1,
00:23:31           columnNumber: -1
00:23:31         },
00:23:31         hitCount: 0
00:23:31       },
00:23:31       {
00:23:31         id: 3,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '10',
00:23:31           url: 'node:internal/bootstrap/node',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 4, 7, 10, 15 ]
00:23:31       },
00:23:31       {
00:23:31         id: 4,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         children: [ 5 ],
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 5,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         children: [ 14, 20 ],
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 14,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '22',
00:23:31           url: 'node:internal/async_hooks',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 20,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '30',
00:23:31           url: 'node:internal/url',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 21 ]
00:23:31       },
00:23:31       {
00:23:31         id: 21,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 22 ]
00:23:31       },
00:23:31       {
00:23:31         id: 22,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 3,
00:23:31         children: [ 23 ],
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 23,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '31',
00:23:31           url: 'node:internal/querystring',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 7,
00:23:31         callFrame: {
00:23:31           functionName: 'setupProcessObject',
00:23:31           scriptId: '10',
00:23:31           url: 'node:internal/bootstrap/node',
00:23:31           lineNumber: 298,
00:23:31           columnNumber: 27
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 8 ]
00:23:31       },
00:23:31       {
00:23:31         id: 8,
00:23:31         callFrame: {
00:23:31           functionName: 'EventEmitter',
00:23:31           scriptId: '13',
00:23:31           url: 'node:events',
00:23:31           lineNumber: 82,
00:23:31           columnNumber: 21
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 9 ]
00:23:31       },
00:23:31       {
00:23:31         id: 9,
00:23:31         callFrame: {
00:23:31           functionName: 'EventEmitter.init',
00:23:31           scriptId: '13',
00:23:31           url: 'node:events',
00:23:31           lineNumber: 191,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 10,
00:23:31         callFrame: {
00:23:31           functionName: 'setupBuffer',
00:23:31           scriptId: '10',
00:23:31           url: 'node:internal/bootstrap/node',
00:23:31           lineNumber: 327,
00:23:31           columnNumber: 20
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 11 ]
00:23:31       },
00:23:31       {
00:23:31         id: 11,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 12 ]
00:23:31       },
00:23:31       {
00:23:31         id: 12,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         children: [ 13 ],
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 13,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '18',
00:23:31           url: 'node:buffer',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 15,
00:23:31         callFrame: {
00:23:31           functionName: 'createGlobalConsole',
00:23:31           scriptId: '10',
00:23:31           url: 'node:internal/bootstrap/node',
00:23:31           lineNumber: 344,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 16, 19 ]
00:23:31       },
00:23:31       {
00:23:31         id: 16,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 17 ]
00:23:31       },
00:23:31       {
00:23:31         id: 17,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 18 ]
00:23:31       },
00:23:31       {
00:23:31         id: 18,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '26',
00:23:31           url: 'node:internal/console/global',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 19,
00:23:31         callFrame: {
00:23:31           functionName: 'wrapConsole',
00:23:31           scriptId: '29',
00:23:31           url: 'node:internal/util/inspector',
00:23:31           lineNumber: 35,
00:23:31           columnNumber: 20
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 6,
00:23:31         callFrame: {
00:23:31           functionName: '(garbage collector)',
00:23:31           scriptId: '0',
00:23:31           url: '',
00:23:31           lineNumber: -1,
00:23:31           columnNumber: -1
00:23:31         },
00:23:31         hitCount: 2
00:23:31       },
00:23:31       {
00:23:31         id: 24,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '58',
00:23:31           url: 'node:internal/bootstrap/switches/is_not_main_thread',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 25,
00:23:31         callFrame: {
00:23:31           functionName: 'oninit',
00:23:31           scriptId: '38',
00:23:31           url: 'node:internal/worker/io',
00:23:31           lineNumber: 159,
00:23:31           columnNumber: 15
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 26 ]
00:23:31       },
00:23:31       {
00:23:31         id: 26,
00:23:31         callFrame: {
00:23:31           functionName: 'initNodeEventTarget',
00:23:31           scriptId: '35',
00:23:31           url: 'node:internal/event_target',
00:23:31           lineNumber: 463,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 27 ]
00:23:31       },
00:23:31       {
00:23:31         id: 27,
00:23:31         callFrame: {
00:23:31           functionName: 'initEventTarget',
00:23:31           scriptId: '35',
00:23:31           url: 'node:internal/event_target',
00:23:31           lineNumber: 230,
00:23:31           columnNumber: 24
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 28,
00:23:31         callFrame: {
00:23:31           functionName: 'exports.emitMessage',
00:23:31           scriptId: '8',
00:23:31           url: 'node:internal/per_context/messageport',
00:23:31           lineNumber: 15,
00:23:31           columnNumber: 30
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 29 ]
00:23:31       },
00:23:31       {
00:23:31         id: 29,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '35',
00:23:31           url: 'node:internal/event_target',
00:23:31           lineNumber: 378,
00:23:31           columnNumber: 19
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 30 ]
00:23:31       },
00:23:31       {
00:23:31         id: 30,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '62',
00:23:31           url: 'node:internal/main/worker_thread',
00:23:31           lineNumber: 97,
00:23:31           columnNumber: 19
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 31, 36, 45 ]
00:23:31       },
00:23:31       {
00:23:31         id: 31,
00:23:31         callFrame: {
00:23:31           functionName: 'initializeReport',
00:23:31           scriptId: '63',
00:23:31           url: 'node:internal/bootstrap/pre_execution',
00:23:31           lineNumber: 178,
00:23:31           columnNumber: 25
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 32 ]
00:23:31       },
00:23:31       {
00:23:31         id: 32,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 33 ]
00:23:31       },
00:23:31       {
00:23:31         id: 33,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 34 ]
00:23:31       },
00:23:31       {
00:23:31         id: 34,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '69',
00:23:31           url: 'node:internal/process/report',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 35 ]
00:23:31       },
00:23:31       {
00:23:31         id: 35,
00:23:31         callFrame: {
00:23:31           functionName: 'internalBinding',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 136,
00:23:31           columnNumber: 44
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 36,
00:23:31         callFrame: {
00:23:31           functionName: 'initializeCJSLoader',
00:23:31           scriptId: '63',
00:23:31           url: 'node:internal/bootstrap/pre_execution',
00:23:31           lineNumber: 412,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 37 ]
00:23:31       },
00:23:31       {
00:23:31         id: 37,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 38 ]
00:23:31       },
00:23:31       {
00:23:31         id: 38,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 39 ]
00:23:31       },
00:23:31       {
00:23:31         id: 39,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '70',
00:23:31           url: 'node:internal/modules/cjs/loader',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 40 ]
00:23:31       },
00:23:31       {
00:23:31         id: 40,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 41 ]
00:23:31       },
00:23:31       {
00:23:31         id: 41,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         children: [ 42 ],
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 42,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '71',
00:23:31           url: 'node:internal/source_map/source_map_cache',
00:23:31           lineNumber: 0,
00:23:31           columnNumber: 0
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 43 ]
00:23:31       },
00:23:31       {
00:23:31         id: 43,
00:23:31         callFrame: {
00:23:31           functionName: 'nativeModuleRequire',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 302,
00:23:31           columnNumber: 28
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 44 ]
00:23:31       },
00:23:31       {
00:23:31         id: 44,
00:23:31         callFrame: {
00:23:31           functionName: 'compileForInternalLoader',
00:23:31           scriptId: '9',
00:23:31           url: 'node:internal/bootstrap/loaders',
00:23:31           lineNumber: 269,
00:23:31           columnNumber: 26
00:23:31         },
00:23:31         hitCount: 1,
00:23:31         positionTicks: [ [Object] ]
00:23:31       },
00:23:31       {
00:23:31         id: 45,
00:23:31         callFrame: {
00:23:31           functionName: 'executeUserEntryPoint',
00:23:31           scriptId: '94',
00:23:31           url: 'node:internal/modules/run_main',
00:23:31           lineNumber: 68,
00:23:31           columnNumber: 30
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 46 ]
00:23:31       },
00:23:31       {
00:23:31         id: 46,
00:23:31         callFrame: {
00:23:31           functionName: 'Module._load',
00:23:31           scriptId: '70',
00:23:31           url: 'node:internal/modules/cjs/loader',
00:23:31           lineNumber: 747,
00:23:31           columnNumber: 23
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 47 ]
00:23:31       },
00:23:31       {
00:23:31         id: 47,
00:23:31         callFrame: {
00:23:31           functionName: 'Module.load',
00:23:31           scriptId: '70',
00:23:31           url: 'node:internal/modules/cjs/loader',
00:23:31           lineNumber: 960,
00:23:31           columnNumber: 32
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 48 ]
00:23:31       },
00:23:31       {
00:23:31         id: 48,
00:23:31         callFrame: {
00:23:31           functionName: 'Module._extensions..js',
00:23:31           scriptId: '70',
00:23:31           url: 'node:internal/modules/cjs/loader',
00:23:31           lineNumber: 1116,
00:23:31           columnNumber: 36
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 49 ]
00:23:31       },
00:23:31       {
00:23:31         id: 49,
00:23:31         callFrame: {
00:23:31           functionName: 'readFileSync',
00:23:31           scriptId: '72',
00:23:31           url: 'node:fs',
00:23:31           lineNumber: 392,
00:23:31           columnNumber: 21
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 50 ]
00:23:31       },
00:23:31       {
00:23:31         id: 50,
00:23:31         callFrame: {
00:23:31           functionName: 'tryReadSync',
00:23:31           scriptId: '72',
00:23:31           url: 'node:fs',
00:23:31           lineNumber: 380,
00:23:31           columnNumber: 20
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 51 ]
00:23:31       },
00:23:31       {
00:23:31         id: 51,
00:23:31         callFrame: {
00:23:31           functionName: 'readSync',
00:23:31           scriptId: '72',
00:23:31           url: 'node:fs',
00:23:31           lineNumber: 573,
00:23:31           columnNumber: 17
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 52 ]
00:23:31       },
00:23:31       {
00:23:31         id: 52,
00:23:31         callFrame: {
00:23:31           functionName: 'hidden',
00:23:31           scriptId: '11',
00:23:31           url: 'node:internal/errors',
00:23:31           lineNumber: 308,
00:23:31           columnNumber: 24
00:23:31         },
00:23:31         hitCount: 0,
00:23:31         children: [ 53 ]
00:23:31       },
00:23:31       {
00:23:31         id: 53,
00:23:31         callFrame: {
00:23:31           functionName: '',
00:23:31           scriptId: '17',
00:23:31           url: 'node:internal/validators',
00:23:31           lineNumber: 86,
00:23:31           columnNumber: 2
00:23:31         },
00:23:31         hitCount: 2,
00:23:31         positionTicks: [ [Object] ]
00:23:31       }
00:23:31     ]
00:23:31     node:assert:119
00:23:31       throw new AssertionError(obj);
00:23:31       ^
00:23:31     
00:23:31     AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
00:23:31         at verifyFrames (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1015/test/common/cpu-prof.js:34:10)
00:23:31         at Object.<anonymous> (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1015/test/sequential/test-cpu-prof-worker-argv.js:37:3)
00:23:31         at Module._compile (node:internal/modules/cjs/loader:1108:14)
00:23:31         at Object.Module._extensions..js (node:internal/modules/cjs/loader:1137:10)
00:23:31         at Module.load (node:internal/modules/cjs/loader:973:32)
00:23:31         at Function.Module._load (node:internal/modules/cjs/loader:813:14)
00:23:31         at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
00:23:31         at node:internal/main/run_main_module:17:47 {
00:23:31       generatedMessage: true,
00:23:31       code: 'ERR_ASSERTION',
00:23:31       actual: [],
00:23:31       expected: [],
00:23:31       operator: 'notDeepStrictEqual'
00:23:31     }
00:23:31   ...

[Trott]

Stress test: https://ci.nodejs.org/job/node-stress-single-test/208/

[Trott]

Stress test: https://ci.nodejs.org/job/node-stress-single-test/208/

Failed 5 times in 1000 runs on osx15 and 1 time in 1000 runs on osx14.

[Trott]

Saw it again today at https://ci.nodejs.org/job/node-test-commit-osx/38260/nodes=osx1014/console.

Details

00:16:59 not ok 3121 sequential/test-cpu-prof-worker-argv
00:17:00   ---
00:17:00   duration_ms: 0.426
00:17:00   severity: fail
00:17:00   exitcode: 1
00:17:00   stack: |-
00:17:00     
00:17:00     [
00:17:00       {
00:17:00         id: 1,
00:17:00         callFrame: {
00:17:00           functionName: '(root)',
00:17:00           scriptId: '0',
00:17:00           url: '',
00:17:00           lineNumber: -1,
00:17:00           columnNumber: -1
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 2, 3, 20, 21 ]
00:17:00       },
00:17:00       {
00:17:00         id: 2,
00:17:00         callFrame: {
00:17:00           functionName: '(program)',
00:17:00           scriptId: '0',
00:17:00           url: '',
00:17:00           lineNumber: -1,
00:17:00           columnNumber: -1
00:17:00         },
00:17:00         hitCount: 3
00:17:00       },
00:17:00       {
00:17:00         id: 3,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '10',
00:17:00           url: 'node:internal/bootstrap/node',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 4, 7 ]
00:17:00       },
00:17:00       {
00:17:00         id: 4,
00:17:00         callFrame: {
00:17:00           functionName: 'setupPrepareStackTrace',
00:17:00           scriptId: '10',
00:17:00           url: 'node:internal/bootstrap/node',
00:17:00           lineNumber: 279,
00:17:00           columnNumber: 31
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 5 ]
00:17:00       },
00:17:00       {
00:17:00         id: 5,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 6 ]
00:17:00       },
00:17:00       {
00:17:00         id: 6,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 7,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 8 ]
00:17:00       },
00:17:00       {
00:17:00         id: 8,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 9, 11, 14, 17 ]
00:17:00       },
00:17:00       {
00:17:00         id: 9,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '12',
00:17:00           url: 'node:internal/util',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 10 ]
00:17:00       },
00:17:00       {
00:17:00         id: 10,
00:17:00         callFrame: {
00:17:00           functionName: 'internalBinding',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 136,
00:17:00           columnNumber: 44
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 11,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '23',
00:17:00           url: 'node:internal/process/task_queues',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 12 ]
00:17:00       },
00:17:00       {
00:17:00         id: 12,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 13 ]
00:17:00       },
00:17:00       {
00:17:00         id: 13,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 14,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '34',
00:17:00           url: 'node:internal/abort_controller',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 15 ]
00:17:00       },
00:17:00       {
00:17:00         id: 15,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 16 ]
00:17:00       },
00:17:00       {
00:17:00         id: 16,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 17,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '38',
00:17:00           url: 'node:internal/worker/io',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 18 ]
00:17:00       },
00:17:00       {
00:17:00         id: 18,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 19 ]
00:17:00       },
00:17:00       {
00:17:00         id: 19,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 20,
00:17:00         callFrame: {
00:17:00           functionName: '(garbage collector)',
00:17:00           scriptId: '0',
00:17:00           url: '',
00:17:00           lineNumber: -1,
00:17:00           columnNumber: -1
00:17:00         },
00:17:00         hitCount: 1
00:17:00       },
00:17:00       {
00:17:00         id: 21,
00:17:00         callFrame: {
00:17:00           functionName: 'exports.emitMessage',
00:17:00           scriptId: '8',
00:17:00           url: 'node:internal/per_context/messageport',
00:17:00           lineNumber: 15,
00:17:00           columnNumber: 30
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 22 ]
00:17:00       },
00:17:00       {
00:17:00         id: 22,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '35',
00:17:00           url: 'node:internal/event_target',
00:17:00           lineNumber: 380,
00:17:00           columnNumber: 19
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 23 ]
00:17:00       },
00:17:00       {
00:17:00         id: 23,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '62',
00:17:00           url: 'node:internal/main/worker_thread',
00:17:00           lineNumber: 97,
00:17:00           columnNumber: 19
00:17:00         },
00:17:00         hitCount: 2,
00:17:00         children: [ 24, 27, 44 ],
00:17:00         positionTicks: [ [Object], [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 24,
00:17:00         callFrame: {
00:17:00           functionName: 'initializeReport',
00:17:00           scriptId: '63',
00:17:00           url: 'node:internal/bootstrap/pre_execution',
00:17:00           lineNumber: 178,
00:17:00           columnNumber: 25
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 25 ]
00:17:00       },
00:17:00       {
00:17:00         id: 25,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 26 ]
00:17:00       },
00:17:00       {
00:17:00         id: 26,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 27,
00:17:00         callFrame: {
00:17:00           functionName: 'initializeCJSLoader',
00:17:00           scriptId: '63',
00:17:00           url: 'node:internal/bootstrap/pre_execution',
00:17:00           lineNumber: 412,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 28 ]
00:17:00       },
00:17:00       {
00:17:00         id: 28,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 29 ]
00:17:00       },
00:17:00       {
00:17:00         id: 29,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 30 ]
00:17:00       },
00:17:00       {
00:17:00         id: 30,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '70',
00:17:00           url: 'node:internal/modules/cjs/loader',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 31 ]
00:17:00       },
00:17:00       {
00:17:00         id: 31,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 32 ]
00:17:00       },
00:17:00       {
00:17:00         id: 32,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 33 ]
00:17:00       },
00:17:00       {
00:17:00         id: 33,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '81',
00:17:00           url: 'node:internal/process/esm_loader',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 34 ]
00:17:00       },
00:17:00       {
00:17:00         id: 34,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 35 ]
00:17:00       },
00:17:00       {
00:17:00         id: 35,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 36 ]
00:17:00       },
00:17:00       {
00:17:00         id: 36,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '82',
00:17:00           url: 'node:internal/modules/esm/loader',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 37 ]
00:17:00       },
00:17:00       {
00:17:00         id: 37,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 38 ]
00:17:00       },
00:17:00       {
00:17:00         id: 38,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 39 ]
00:17:00       },
00:17:00       {
00:17:00         id: 39,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '87',
00:17:00           url: 'node:internal/modules/esm/get_source',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 40 ]
00:17:00       },
00:17:00       {
00:17:00         id: 40,
00:17:00         callFrame: {
00:17:00           functionName: 'nativeModuleRequire',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 302,
00:17:00           columnNumber: 28
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 41 ]
00:17:00       },
00:17:00       {
00:17:00         id: 41,
00:17:00         callFrame: {
00:17:00           functionName: 'compileForInternalLoader',
00:17:00           scriptId: '9',
00:17:00           url: 'node:internal/bootstrap/loaders',
00:17:00           lineNumber: 269,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 42 ]
00:17:00       },
00:17:00       {
00:17:00         id: 42,
00:17:00         callFrame: {
00:17:00           functionName: '',
00:17:00           scriptId: '88',
00:17:00           url: 'node:internal/fs/promises',
00:17:00           lineNumber: 0,
00:17:00           columnNumber: 0
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 43 ]
00:17:00       },
00:17:00       {
00:17:00         id: 43,
00:17:00         callFrame: {
00:17:00           functionName: 'EventEmitterMixin',
00:17:00           scriptId: '35',
00:17:00           url: 'node:internal/event_target',
00:17:00           lineNumber: 653,
00:17:00           columnNumber: 26
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       },
00:17:00       {
00:17:00         id: 44,
00:17:00         callFrame: {
00:17:00           functionName: 'executeUserEntryPoint',
00:17:00           scriptId: '94',
00:17:00           url: 'node:internal/modules/run_main',
00:17:00           lineNumber: 68,
00:17:00           columnNumber: 30
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 45 ]
00:17:00       },
00:17:00       {
00:17:00         id: 45,
00:17:00         callFrame: {
00:17:00           functionName: 'Module._load',
00:17:00           scriptId: '70',
00:17:00           url: 'node:internal/modules/cjs/loader',
00:17:00           lineNumber: 747,
00:17:00           columnNumber: 23
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 46 ]
00:17:00       },
00:17:00       {
00:17:00         id: 46,
00:17:00         callFrame: {
00:17:00           functionName: 'Module.load',
00:17:00           scriptId: '70',
00:17:00           url: 'node:internal/modules/cjs/loader',
00:17:00           lineNumber: 960,
00:17:00           columnNumber: 32
00:17:00         },
00:17:00         hitCount: 0,
00:17:00         children: [ 47 ]
00:17:00       },
00:17:00       {
00:17:00         id: 47,
00:17:00         callFrame: {
00:17:00           functionName: 'Module._extensions..js',
00:17:00           scriptId: '70',
00:17:00           url: 'node:internal/modules/cjs/loader',
00:17:00           lineNumber: 1116,
00:17:00           columnNumber: 36
00:17:00         },
00:17:00         hitCount: 1,
00:17:00         positionTicks: [ [Object] ]
00:17:00       }
00:17:00     ]
00:17:00     node:assert:119
00:17:00       throw new AssertionError(obj);
00:17:00       ^
00:17:00     
00:17:00     AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
00:17:00         at verifyFrames (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1014/test/common/cpu-prof.js:34:10)
00:17:00         at Object.<anonymous> (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1014/test/sequential/test-cpu-prof-worker-argv.js:37:3)
00:17:00         at Module._compile (node:internal/modules/cjs/loader:1108:14)
00:17:00         at Object.Module._extensions..js (node:internal/modules/cjs/loader:1137:10)
00:17:00         at Module.load (node:internal/modules/cjs/loader:973:32)
00:17:00         at Function.Module._load (node:internal/modules/cjs/loader:813:14)
00:17:00         at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
00:17:00         at node:internal/main/run_main_module:17:47 {
00:17:00       generatedMessage: true,
00:17:00       code: 'ERR_ASSERTION',
00:17:00       actual: [],
00:17:00       expected: [],
00:17:00       operator: 'notDeepStrictEqual'
00:17:00     }
00:17:00   ...

[Trott]

@joyeecheung Based on the output, would you say that the test is valid but should be made more lenient? Or is there a bug somewhere (in Node.js or in the test or in a dependency)?

[joyeecheung]

@Trott Making the test more lenient SGTM, though it's difficult to say what parameters would be good for the CI. Maybe tuning the CPU_PROF_INTERVAL in the test down would help. It might also help to tune the FIB environment variable up so that the workload lasts longer, though that would lead to longer test running time.

[Trott]

This seems to not be failing on macOS in CI anymore (or at least not with noticeable frequency) but has been failing a lot in CI on FreeBSD 12.

• Confirm that a stress test on FreeBSD fails
• Try decreasing CPU_PROF_INTERVAL to see if that fixes it
• Try increasing FIB
• If the fixed test takes a long time to run, consider moving it to pummel

Of course, if that approach doesn't fix the test, then we'll have to add more things to try.

[Trott]

• Confirm that a stress test on FreeBSD fails

https://ci.nodejs.org/job/node-stress-single-test/324/

EDIT: 76 failures in 1000 runs.

[Trott]

• Try decreasing CPU_PROF_INTERVAL to see if that fixes it

Stress test with CPU_PROF_INTERVAL reduced from 50 to 32: https://ci.nodejs.org/job/node-stress-single-test/325/

EDIT: 98 failures so that seems to have made it worse, if anything.