Investigate flaky test-vm-timeout-rethrow on Windows

Version: master
Platform: Windows
Subsystem: test, vm

Example: https://ci.nodejs.org/job/node-test-binary-windows/6447/RUN_SUBSET=3,VS_VERSION=vs2015,label=win2012r2/console

not ok 342 sequential/test-vm-timeout-rethrow
  ---
  duration_ms: 0.641
  severity: fail
  stack: |-
    
    assert.js:85
      throw new assert.AssertionError({
      ^
    AssertionError: false == true
        at process.<anonymous> (c:\workspace\node-test-binary-windows\RUN_SUBSET\3\VS_VERSION\vs2015\label\win2012r2\test\sequential\test-vm-timeout-rethrow.js:27:12)
        at emitOne (events.js:101:20)
        at process.emit (events.js:189:7)
  ...