Investigate flaky parallel/test-trace-events-api-worker-disabled

[Trott]

https://ci.nodejs.org/job/node-test-commit-aix/18754/nodes=aix61-ppc64/console

00:45:35 not ok 1904 parallel/test-trace-events-api-worker-disabled
00:45:35   ---
00:45:35   duration_ms: 2.580
00:45:35   severity: fail
00:45:35   exitcode: 1
00:45:35   stack: |-
00:45:35     Mismatched innerFn function calls. Expected exactly 1, actual 0.
00:45:35         at mustCall (/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/test/common/index.js:312:10)
00:45:35         at Object.expectsError (/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/test/common/index.js:606:10)
00:45:35         at Object.<anonymous> (/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/test/parallel/test-trace-events-api-worker-disabled.js:8:23)
00:45:35         at Module._compile (internal/modules/cjs/loader.js:722:30)
00:45:35         at Object.Module._extensions..js (internal/modules/cjs/loader.js:733:10)
00:45:35         at Module.load (internal/modules/cjs/loader.js:620:32)
00:45:35         at tryModuleLoad (internal/modules/cjs/loader.js:560:12)
00:45:35         at Function.Module._load (internal/modules/cjs/loader.js:552:3)
00:45:35         at Function.Module.runMain (internal/modules/cjs/loader.js:775:12)
00:45:35   ...

[Trott]

https://ci.nodejs.org/job/node-test-commit-linux/23108/nodes=centos7-64-gcc6/console

14:20:02 not ok 1816 parallel/test-trace-events-api-worker-disabled
14:20:02   ---
14:20:02   duration_ms: 0.320
14:20:02   severity: fail
14:20:02   exitcode: 1
14:20:02   stack: |-
14:20:02     Mismatched innerFn function calls. Expected exactly 1, actual 0.
14:20:02         at mustCall (/home/iojs/build/workspace/node-test-commit-linux/nodes/centos7-64-gcc6/test/common/index.js:312:10)
14:20:02         at Object.expectsError (/home/iojs/build/workspace/node-test-commit-linux/nodes/centos7-64-gcc6/test/common/index.js:606:10)
14:20:02         at Object.<anonymous> (/home/iojs/build/workspace/node-test-commit-linux/nodes/centos7-64-gcc6/test/parallel/test-trace-events-api-worker-disabled.js:8:23)
14:20:02         at Module._compile (internal/modules/cjs/loader.js:722:30)
14:20:02         at Object.Module._extensions..js (internal/modules/cjs/loader.js:733:10)
14:20:02         at Module.load (internal/modules/cjs/loader.js:620:32)
14:20:02         at tryModuleLoad (internal/modules/cjs/loader.js:560:12)
14:20:02         at Function.Module._load (internal/modules/cjs/loader.js:552:3)
14:20:02         at Function.Module.runMain (internal/modules/cjs/loader.js:775:12)
14:20:02   ...

[Trott]

Showing up on different platforms. @nodejs/workers @nodejs/trace-events

[Trott]

https://ci.nodejs.org/job/node-test-commit-linux/23108/nodes=centos7-64-gcc6/console

14:20:02 not ok 1816 parallel/test-trace-events-api-worker-disabled
14:20:02   ---
14:20:02   duration_ms: 0.320
14:20:02   severity: fail
14:20:02   exitcode: 1
14:20:02   stack: |-
14:20:02     Mismatched innerFn function calls. Expected exactly 1, actual 0.
14:20:02         at mustCall (/home/iojs/build/workspace/node-test-commit-linux/nodes/centos7-64-gcc6/test/common/index.js:312:10)
14:20:02         at Object.expectsError (/home/iojs/build/workspace/node-test-commit-linux/nodes/centos7-64-gcc6/test/common/index.js:606:10)
14:20:02         at Object.<anonymous> (/home/iojs/build/workspace/node-test-commit-linux/nodes/centos7-64-gcc6/test/parallel/test-trace-events-api-worker-disabled.js:8:23)
14:20:02         at Module._compile (internal/modules/cjs/loader.js:722:30)
14:20:02         at Object.Module._extensions..js (internal/modules/cjs/loader.js:733:10)
14:20:02         at Module.load (internal/modules/cjs/loader.js:620:32)
14:20:02         at tryModuleLoad (internal/modules/cjs/loader.js:560:12)
14:20:02         at Function.Module._load (internal/modules/cjs/loader.js:552:3)
14:20:02         at Function.Module.runMain (internal/modules/cjs/loader.js:775:12)
14:20:02   ...

[Trott]

https://ci.nodejs.org/job/node-test-commit-aix/19985/nodes=aix61-ppc64/console

test-osuosl-aix61-ppc64_be-1

11:26:15 not ok 1958 parallel/test-trace-events-api-worker-disabled
11:26:15   ---
11:26:15   duration_ms: 1.677
11:26:15   severity: fail
11:26:15   exitcode: 1
11:26:15   stack: |-
11:26:15     Mismatched innerFn function calls. Expected exactly 1, actual 0.
11:26:15         at mustCall (/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/test/common/index.js:343:10)
11:26:15         at Object.expectsError (/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/test/common/index.js:637:10)
11:26:15         at Object.<anonymous> (/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/test/parallel/test-trace-events-api-worker-disabled.js:8:23)
11:26:15         at Module._compile (internal/modules/cjs/loader.js:718:30)
11:26:15         at Object.Module._extensions..js (internal/modules/cjs/loader.js:729:10)
11:26:15         at Module.load (internal/modules/cjs/loader.js:617:32)
11:26:15         at tryModuleLoad (internal/modules/cjs/loader.js:560:12)
11:26:15         at Function.Module._load (internal/modules/cjs/loader.js:552:3)
11:26:15         at Function.Module.runMain (internal/modules/cjs/loader.js:771:12)
11:26:15   ...

[addaleax]

Stress test to see if this is still flaky: https://ci.nodejs.org/job/node-stress-single-test/2198/