1) React\Tests\EventLoop\StreamSelectLoopTest::testStopShouldPreventRunFromBlocking
Failed asserting that 0.010394096374512 is less than 0.005.

The purpose of the test is to make sure a timer is not still executed after stop is called.
The timer is set to 1 second, so the test should still work if the speed is adjusted for more HHVM headroom, like 0.05 instead of 0.005.