Investigate flaky parallel/test-stream-buffer-list

[joyeecheung]

Reason	parallel/test-stream-buffer-list
Type	JS_TEST_FAILURE
Failed PR	2 (#23233, #23210)
Appeared	test-digitalocean-alpine37_container-x64-1, test-softlayer-centos6-x64-2, test-softlayer-centos7-x64-1, test-rackspace-debian8-x64-1, test-digitalocean-debian9-x64-1, test-rackspace-fedora26-x64-1, test-rackspace-fedora27-x64-1, test-softlayer-ubuntu1404-x64-1, test-rackspace-ubuntu1604-x64-1, test-joyent-ubuntu1710-x64-1, test-digitalocean-ubuntu1804_container-x64-1, test-digitalocean-freebsd11-x64-2, test-digitalocean-alpine37_container-x64-2, test-softlayer-centos6-x64-1, test-joyent-ubuntu1710-x64-2, test-digitalocean-ubuntu1804_container-x64-2, test-macstadium-macos10.11-x64-2, test-osuosl-ubuntu1404-ppc64_le-1, test-joyent-smartos16-x64-1, test-joyent-smartos17-x64-2, test-digitalocean-ubuntu1604_sharedlibs_container-x64-6, test-joyent-ubuntu1604_sharedlibs_container-x64-3, test-digitalocean-ubuntu1604_sharedlibs_container-x64-2, test-digitalocean-ubuntu1604_sharedlibs_container-x64-1, test-packetnet-centos7-arm64-2, test-scaleway-ubuntu1604-armv7l-3, test-packetnet-ubuntu1604-arm64-1, test-linuxonecc-rhel72-s390x-2, test-osuosl-aix61-ppc64_be-1, test-azure_msft-win10-x64-4, test-rackspace-win2008r2-x64-5, test-azure_msft-win2016-x64-5, test-rackspace-win2012r2-x64-4, undefined
First CI	https://ci.nodejs.org/job/node-test-pull-request/17595/
Last CI	https://ci.nodejs.org/job/node-test-pull-request/17599/

Example

not ok 1573 parallel/test-stream-buffer-list
  ---
  duration_ms: 0.403
  severity: fail
  exitcode: 1
  stack: |-
    assert.js:84
      throw new AssertionError(obj);
      ^
    
    AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
    + actual - expected
    
    + �[32m'BufferList { head: \u001b[1mnull\u001b[22m, tail: \u001b[1mnull\u001b[22m, length: \u001b[33m0\u001b[39m }'�[39m
    - �[32m'BufferList { length: \u001b[33m0\u001b[39m }'�[39m
        at Object.<anonymous> (/home/iojs/build/workspace/node-test-commit-linux/nodes/alpine-last-latest-x64/test/parallel/test-stream-buffer-list.js:37:8)
        at Module._compile (internal/modules/cjs/loader.js:703:30)
        at Object.Module._extensions..js (internal/modules/cjs/loader.js:714:10)
        at Module.load (internal/modules/cjs/loader.js:613:32)
        at tryModuleLoad (internal/modules/cjs/loader.js:552:12)
        at Function.Module._load (internal/modules/cjs/loader.js:544:3)
        at Function.Module.runMain (internal/m...

[joyeecheung]

This seems to be failing a lot of workers in the CI for #23233 but it also fails #23210 which is just..odd? cc @ofrobots

[Trott]

Fixed by 7aeda94?

[joyeecheung]

@Trott Thanks, didn't notice the fix. I'll close this one.