First seen Mon Mar 13, 2017, 15:55:58: https://treeherder.mozilla.org/#/jobs?repo=comm-central&revision=cbf7af49eabc6fa153cf7d0da1bc3fd74d689b1b TEST-UNEXPECTED-FAIL | xpcshell-unpack.ini:toolkit/mozapps/extensions/test/xpcshell/test_reload.js | xpcshell return code: 0 TEST-UNEXPECTED-FAIL | xpcshell-unpack.ini:toolkit/mozapps/extensions/test/xpcshell/test_reload.js | test_reloading_a_temp_addon - [test_reloading_a_temp_addon : 224] A promise chain failed to handle a rejection: A mutation operation was attempted on a database that did not allow mutations. - rejection date: Mon Mar 13 2017 10:25:20 GMT-0700 (PDT) - stack: _do_main@/builds/slave/test/build/tests/xpcshell/head.js:211:5 TEST-UNEXPECTED-FAIL | xpcshell.ini:toolkit/mozapps/extensions/test/xpcshell/test_reload.js | xpcshell return code: 0 TEST-UNEXPECTED-FAIL | xpcshell.ini:toolkit/mozapps/extensions/test/xpcshell/test_reload.js | test_reloading_a_temp_addon - [test_reloading_a_temp_addon : 224] A promise chain failed to handle a rejection: A mutation operation was attempted on a database that did not allow mutations. - rejection date: Mon Mar 13 2017 10:25:22 GMT-0700 (PDT) - stack: _do_main@/builds/slave/test/build/tests/xpcshell/head.js:211:5 Looks like Bug 1344590: Part 1 - Handle extension reloads, upgrades, and manager restarts in xpcshell or Bug 1344590: Part 4 - Store parsed and normalized extension data in indexedDB https://hg.mozilla.org/mozilla-central/rev/d580a74eae4e Kris, another (web?) extension related test that fails in TB, so far strangely only on Linux and Mac. Could you please advise us here. Should we just disable the test?

Only fails on Linux and Mac. Also adding NI for Andrew.

To state the obvious, this test is passing on mozilla-central so something is different in Thunderbird. I'm not familiar enough with Thunderbird to know what's different that could be responsible. This particular test uses webextensions though, if Thunderbird doesn't support webextensions, disabling that test might be your best bet.

Thanks for your reply. "Best bet" approach ;-)

Comment on attachment 8848397 [details] [diff] [review] 1346916-disable-test-tb.patch Review of attachment 8848397 [details] [diff] [review]: ----------------------------------------------------------------- This is fine if its what you want to do but this file contains other tests that you may not want to disable, I was thinking you would just disable the webextensions specific test cases inside this file.

For the record: I prepared this patch, but for some reason my try run hasn't gone anywhere yet :-( https://treeherder.mozilla.org/#/jobs?repo=try-comm-central&revision=30f49b89af21210e84d7ccf745c566c5b5c220b3

Oops, wrong patch.

Comment on attachment 8849579 [details] [diff] [review] 1346916-skip-test.patch Thanks for your suggestion, Andrew. I finally managed to get a try run through: https://treeherder.mozilla.org/#/jobs?repo=try-comm-central&revision=f883d29f1585772b9c13acd8c27bf81fbc0f5e50 You can't see the changeset since that was pushed earlier on a job that never completed due to some infra problems today. Anyway, this just skips the part of the test that doesn't work.

Andrew, thanks for the quick review. === Hi Tomcat, this needs to be landed on M-C/M-I. I didn't want to move the bug to an M-C product/component, so I'm setting NI so you can pick it up. Thank you in advance.

Pushed by cbook@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/eb0321aaeca4 Skip test_reload.js:test_reloading_a_temp_addon() for Thunderbird. a=aswan

pushed :)