Investigate flaky parallel/test-dgram-multicast-set-interface on pi{1,2}-raspbian-wheezy

[mscdex]

• Version: master
• Platform: linux
• Subsystem: test

not ok 50 parallel/test-dgram-multicast-set-interface
  ---
  duration_ms: 1.132
  severity: fail
  stack: |-
    1..0 # Skipped: Skipping udp6 tests, no IPv6 support.
    Mismatched <anonymous> function calls. Expected exactly 1, actual 0.
        at Object.exports.mustCall (/home/iojs/build/workspace/node-test-binary-arm/test/common/index.js:482:10)
        at Object.<anonymous> (/home/iojs/build/workspace/node-test-binary-arm/test/parallel/test-dgram-multicast-set-interface.js:10:33)
        at Module._compile (module.js:600:30)
        at Object.Module._extensions..js (module.js:611:10)
        at Module.load (module.js:521:32)
        at tryModuleLoad (module.js:484:12)
        at Function.Module._load (module.js:476:3)
        at Function.Module.runMain (module.js:641:10)
        at startup (bootstrap_node.js:201:16)
    Mismatched <anonymous> function calls. Expected exactly 1, actual 0.
        at Object.exports.mustCall (/home/iojs/build/workspace/node-test-binary-arm/test/common/index.js:482:10)
        at Object.<anonymous> (/home/iojs/build/workspace/node-test-binary-arm/test/parallel/test-dgram-multicast-set-interface.js:22:33)
        at Module._compile (module.js:600:30)
        at Object.Module._extensions..js (module.js:611:10)
        at Module.load (module.js:521:32)
        at tryModuleLoad (module.js:484:12)
        at Function.Module._load (module.js:476:3)
        at Function.Module.runMain (module.js:641:10)
        at startup (bootstrap_node.js:201:16)
    Mismatched <anonymous> function calls. Expected exactly 1, actual 0.
        at Object.exports.mustCall (/home/iojs/build/workspace/node-test-binary-arm/test/common/index.js:482:10)
        at Object.<anonymous> (/home/iojs/build/workspace/node-test-binary-arm/test/parallel/test-dgram-multicast-set-interface.js:34:33)
        at Module._compile (module.js:600:30)
        at Object.Module._extensions..js (module.js:611:10)
        at Module.load (module.js:521:32)
        at tryModuleLoad (module.js:484:12)
        at Function.Module._load (module.js:476:3)
        at Function.Module.runMain (module.js:641:10)
        at startup (bootstrap_node.js:201:16)
    Mismatched <anonymous> function calls. Expected exactly 1, actual 0.
        at Object.exports.mustCall (/home/iojs/build/workspace/node-test-binary-arm/test/common/index.js:482:10)
        at Object.<anonymous> (/home/iojs/build/workspace/node-test-binary-arm/test/parallel/test-dgram-multicast-set-interface.js:51:33)
        at Module._compile (module.js:600:30)
        at Object.Module._extensions..js (module.js:611:10)
        at Module.load (module.js:521:32)
        at tryModuleLoad (module.js:484:12)
        at Function.Module._load (module.js:476:3)
        at Function.Module.runMain (module.js:641:10)
        at startup (bootstrap_node.js:201:16)
    Mismatched <anonymous> function calls. Expected exactly 1, actual 0.
        at Object.exports.mustCall (/home/iojs/build/workspace/node-test-binary-arm/test/common/index.js:482:10)
        at Object.<anonymous> (/home/iojs/build/workspace/node-test-binary-arm/test/parallel/test-dgram-multicast-set-interface.js:65:33)
        at Module._compile (module.js:600:30)
        at Object.Module._extensions..js (module.js:611:10)
        at Module.load (module.js:521:32)
        at tryModuleLoad (module.js:484:12)
        at Function.Module._load (module.js:476:3)
        at Function.Module.runMain (module.js:641:10)
        at startup (bootstrap_node.js:201:16)

[cjihrig]

Proposed fix in #15421.