<!-- Thank you for reporting an issue. This issue tracker is for bugs and issues found within Node.js core. If you require more general support please file an issue on our help repo. https://github.com/nodejs/help Please fill in as much of the template below as you're able. Version: output of `node -v` Platform: output of `uname -a` (UNIX), or version and 32 or 64-bit (Windows) Subsystem: if known, please specify affected core module name If possible, please provide code that demonstrates the problem, keeping it as simple and free of external dependencies as you are able. --> * **Version**: v8.0.0-pre * **Platform**: ubuntu1604-32 * **Subsystem**: test <!-- Enter your issue details below this comment. --> https://ci.nodejs.org/job/node-test-commit-linux/9126/nodes=ubuntu1604-32/console ```console duration_ms: 6.324 severity: fail stack: |- http/bench-parser.js http/bench-parser.js n=1 len=1: 699.2112198229178 http/check_invalid_header_char.js http/check_invalid_header_char.js n=1 key="": 1,391.0024398182795 http/check_invalid_header_char.js n=1 key="1": 2,476.4367047542632 http/check_invalid_header_char.js n=1 key="\t\t\t\t\t\t\t\t\t\tFoo bar baz": 3,290.751015196688 http/check_invalid_header_char.js n=1 key="keep-alive": 2,944.10325558938 http/check_invalid_header_char.js n=1 key="close": 3,087.3631140379316 http/check_invalid_header_char.js n=1 key="gzip": 671.2657319515104 http/check_invalid_header_char.js n=1 key="20091": 1,022.5733057238541 http/check_invalid_header_char.js n=1 key="private": 2,383.250515377924 http/check_invalid_header_char.js n=1 key="text/html; charset=utf-8": 3,135.199194880847 http/check_invalid_header_char.js n=1 key="text/plain": 2,567.282044172655 http/check_invalid_header_char.js n=1 key="Sat, 07 May 2016 16:54:48 GMT": 3,018.412315122246 http/check_invalid_header_char.js n=1 key="SAMEORIGIN": 2,629.288698528387 http/check_invalid_header_char.js n=1 key="en-US": 2,061.1969370613515 http/check_invalid_header_char.js n=1 key="Here is a value that is really a folded header value\r\n this should be supported, but it is not currently": 1,317.3546990700793 http/check_invalid_header_char.js n=1 key="中文呢": 2,332.818558038193 http/check_invalid_header_char.js n=1 key="foo\nbar": 2,046.6639377814165 http/check_invalid_header_char.js n=1 key="": 3,564.9352964243703 http/check_is_http_token.js http/check_is_http_token.js n=1 key="TCN": 3,193.9697850458333 http/check_is_http_token.js n=1 key="ETag": 2,912.522390015873 http/check_is_http_token.js n=1 key="date": 2,507.9376225754513 http/check_is_http_token.js n=1 key="Vary": 3,599.569491488818 http/check_is_http_token.js n=1 key="server": 2,737.798317349154 http/check_is_http_token.js n=1 key="Server": 3,361.7287353848847 http/check_is_http_token.js n=1 key="status": 3,139.0965052438605 http/check_is_http_token.js n=1 key="version": 3,113.9261003057877 http/check_is_http_token.js n=1 key="Expires": 2,320.2232982902274 http/check_is_http_token.js n=1 key="alt-svc": 2,312.058541322266 http/check_is_http_token.js n=1 key="location": 3,394.9056046496626 http/check_is_http_token.js n=1 key="Connection": 3,323.4295133834507 http/check_is_http_token.js n=1 key="Keep-Alive": 2,866.2657716274084 http/check_is_http_token.js n=1 key="content-type": 1,048.6280275201939 http/check_is_http_token.js n=1 key="Content-Type": 2,749.14845126722 /home/iojs/build/workspace/node-test-commit-linux/nodes/ubuntu1604-32/benchmark/run.js:62 var rate = data.rate.toString().split('.'); ^ TypeError: Cannot read property 'toString' of null at ChildProcess.<anonymous> (/home/iojs/build/workspace/node-test-commit-linux/nodes/ubuntu1604-32/benchmark/run.js:62:27) at emitTwo (events.js:125:13) at ChildProcess.emit (events.js:213:7) at process.nextTick (internal/child_process.js:748:12) at _combinedTickCallback (internal/process/next_tick.js:73:7) at process._tickCallback (internal/process/next_tick.js:104:9) assert.js:86 throw new assert.AssertionError({ ^ AssertionError: 1 === 0 at ChildProcess.child.on (/home/iojs/build/workspace/node-test-commit-linux/nodes/ubuntu1604-32/test/sequential/test-benchmark-http.js:32:10) at emitTwo (events.js:125:13) at ChildProcess.emit (events.js:213:7) at Process.ChildProcess._handle.onexit (internal/child_process.js:208:12) events.js:182 throw er; // Unhandled 'error' event ^ Error: channel closed at process.target.send (internal/child_process.js:544:16) at ChildProcess.sendResult (/home/iojs/build/workspace/node-test-commit-linux/nodes/ubuntu1604-32/benchmark/common.js:221:13) at emitTwo (events.js:125:13) at ChildProcess.emit (events.js:213:7) at process.nextTick (internal/child_process.js:748:12) at _combinedTickCallback (internal/process/next_tick.js:73:7) at process._tickCallback (internal/process/next_tick.js:104:9) ``` /cc @joyeecheung