https://tbpl.mozilla.org/php/getParsedLog.php?id=30099679&tree=B2g-Inbound slave: tst-linux64-ec2-090 14:25:36 INFO - REFTEST TEST-START | http://10.0.2.2:8888/tests/layout/base/crashtests/403569-1.xhtml 14:25:36 INFO - REFTEST TEST-LOAD | http://10.0.2.2:8888/tests/layout/base/crashtests/403569-1.xhtml | 97 / 838 (11%) 14:25:36 INFO - REFTEST TEST-PASS | http://10.0.2.2:8888/tests/layout/base/crashtests/403569-1.xhtml | (LOAD ONLY) 14:25:36 INFO - REFTEST INFO | Loading a blank page 14:25:36 INFO - REFTEST TEST-END | http://10.0.2.2:8888/tests/layout/base/crashtests/403569-1.xhtml 14:25:36 INFO - REFTEST TEST-START | http://10.0.2.2:8888/tests/layout/base/crashtests/403569-2.xhtml 14:25:36 INFO - REFTEST TEST-LOAD | http://10.0.2.2:8888/tests/layout/base/crashtests/403569-2.xhtml | 98 / 838 (11%) 14:25:36 INFO - ###################################### forms.js loaded 14:25:36 INFO - ############################### browserElementPanning.js loaded 14:25:36 INFO - ######################## BrowserElementChildPreload.js loaded 14:25:36 INFO - REFTEST TEST-UNEXPECTED-FAIL | http://10.0.2.2:8888/tests/layout/base/crashtests/403569-2.xhtml | load failed: null 14:25:36 INFO - REFTEST INFO | Saved log: START http://10.0.2.2:8888/tests/layout/base/crashtests/403569-2.xhtml 14:25:36 INFO - REFTEST INFO | Loading a blank page

Hmm, what's up with the "######################## BrowserElementChildPreload.js loaded" in the middle of the reftest run there?

(In reply to Mats Palmgren (:mats) from comment #1) > Hmm, what's up with the "######################## > BrowserElementChildPreload.js loaded" > in the middle of the reftest run there? We used to dump something at the beginning of file loaded by loadFrameScript or similar to ensure they are loaded. If there is a syntax error in those file you won't see anything in the console otherwise.

(In reply to Vivien Nicolas (:vingtetun) (:21) from comment #2) > We used to dump something at the beginning of file loaded by loadFrameScript OK, but what I'm wondering is why we're loading BrowserElementChildPreload.js here? We have run a hundred individual reftests at this point, successfully, then suddenly something(?) loads BrowserElementChildPreload.js and the reftest running at that point fails. My suspicion is that it *caused* the test to fail.

I don't think the root cause of this error is in Layout code.

Inactive; closing (see bug 1180138).