We get this on mac & linux for the last few hours: 15:06:35 INFO - Running test tresize: 15:06:35 INFO - Started Thu, 23 Jul 2015 15:06:35 15:06:35 INFO - DEBUG : operating with platform_type : mac_ 15:06:35 INFO - DEBUG : created profile 15:06:35 INFO - DEBUG : command line: /builds/slave/test/build/application/Nightly.app/Contents/MacOS/firefox -foreground -profile /var/folders/_9/t28c0ng56mb25xlsk8sq_vj400000w/T/tmpKh3loC/profile http://localhost/getInfo.html 15:06:44 INFO - INFO : Could not find __metrics(.*)__metrics in browser_log: browser_output.txt 15:06:44 INFO - INFO : Raw results:FATAL ERROR: Non-local network connections are disabled and a connection attempt to tiles.services.mozilla.com (18.104.22.168) was made. 15:06:44 INFO - You should only access hostnames available via the test networking proxy (if running mochitests) or from a test-specific httpd.js server (if running xpcshell tests). Browser services should be disabled or redirected to a local server. 15:06:44 INFO - INFO : Initialization of new profile failed 15:06:44 INFO - INFO : FATAL ERROR: Non-local network connections are disabled and a connection attempt to tiles.services.mozilla.com (22.214.171.124) was made. 15:06:44 INFO - You should only access hostnames available via the test networking proxy (if running mochitests) or from a test-specific httpd.js server (if running xpcshell tests). Browser services should be disabled or redirected to a local server. 15:06:44 INFO - DEBUG : Terminating: 1679 http://ftp.mozilla.org/pub/mozilla.org/firefox/tinderbox-builds/mozilla-beta-macosx64/1437623601/mozilla-beta_yosemite_test-chromez-bm107-tests1-macosx-build7.txt.gz Looks like regression from bug 1180762, where mozprofile went from 0.23 to 0.24. Perhaps related to this: diff -ru mozprofile-0.23/mozprofile/prefs.py mozprofile-0.24/mozprofile/prefs.py --- mozprofile-0.23/mozprofile/prefs.py 2015-01-08 02:30:51.000000000 +1300 +++ mozprofile-0.24/mozprofile/prefs.py 2015-06-12 17:41:16.000000000 +1200 @@ -164,8 +164,6 @@ to str.format to interpolate preference values. """ - comment = re.compile('/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+/', re.MULTILINE) - marker = '##//' # magical marker lines = [i.strip() for i in mozfile.load(path).readlines() if i.strip()] _lines =  @@ -176,7 +174,6 @@ line = line.replace('//', marker) _lines.append(line) string = '\n'.join(_lines) - string = re.sub(comment, '', string) # skip trailing comments processed_tokens = 
Well, first thing is that it is a harness bug. Talos dependencies are not respected, and on harness the latest versions of packages is taken (see bug 1180664, talos dependency to mozprofile==0.24 is not landed). There is a patch that fixed it - in bug 1185539 - but I think it is only on m-c. We should merge that into other branches as well (aurora, beta, ...). After that, dependencies on harness will be respected for talos needs and we will be good even if internal pypi packages provides newer version that we do not want yet. So the root cause here is probably bug 1180762. but as I said we should just merge the patch to make harness aware of what talos really needs (so this kind of issues won't happen again). That being said, we will have to investigate after that to find why mozprofile 0.24 does not work. :nthomas, thanks for the investigation!
landed: https://treeherder.mozilla.org/#/jobs?repo=mozilla-beta&revision=26c44dd74c22 this should fix it, will see in a couple hours.
Looks like it worked.