investigate flaky sequential/test-regress-GH-897 on Raspberry Pi
https://ci.nodejs.org/job/node-test-binary-arm/4936/RUN_SUBSET=6,label=pi1-raspbian-wheezy/console
not ok 177 sequential/test-regress-GH-897 --- duration_ms: 2.464 severity: fail stack: |- assert.js:85 throw new assert.AssertionError({ ^ AssertionError: timer fired after 104 ms at Timeout.<anonymous> (/home/iojs/build/workspace/node-test-binary-arm/test/sequential/test-regress-GH-897.js:16:10) at Timeout._onTimeout (/home/iojs/build/workspace/node-test-binary-arm/test/common.js:416:15) at ontimeout (timers.js:365:14) at tryOnTimeout (timers.js:237:5) at Timer.listOnTimeout (timers.js:207:5)