Filed by: rmaries [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=317545855&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/KQZ-kzi3TdqAA8hHSQLqAA/runs/0/artifacts/public/logs/live_backing.log

[task 2020-10-04T21:10:17.682Z] 21:10:17     INFO - TEST-START | toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html
[task 2020-10-04T21:10:21.282Z] 21:10:21     INFO - TEST-PASS | toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html | Check generated password format 
[task 2020-10-04T21:10:21.282Z] 21:10:21     INFO - Buffered messages finished
[task 2020-10-04T21:10:21.284Z] 21:10:21     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html | Check autoMaskingEnabled: After fill - true == false 
[task 2020-10-04T21:10:21.284Z] 21:10:21     INFO - {u'columnNumber': 12, u'formattedStack': u'checkPasswordMasked@resource://testing-common/LoginTestUtils.jsm:542:12\ndoApply@resource://specialpowers/WrapPrivileged.jsm:118:18\napply/<@resource://specialpowers/WrapPrivileged.jsm:260:30\nwrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 18, u'formattedStack': u'doApply@resource://specialpowers/WrapPrivileged.jsm:118:18\napply/<@resource://specialpowers/WrapPrivileged.jsm:260:30\nwrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 30, u'formattedStack': u'apply/<@resource://specialpowers/WrapPrivileged.jsm:260:30\nwrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 12, u'formattedStack': u'wrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 12, u'formattedStack': u'apply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 21, u'formattedStack': u'testConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': None, u'name': u'testConfirmPasswordFieldFilledWithGeneratedPassword', u'sourceLine': u'', u'sourceId': 226, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html', u'lineNumber': 158, u'asyncCaller': None}, u'name': u'apply', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 244, u'asyncCaller': None}, u'name': u'wrapExceptions', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 206, u'asyncCaller': None}, u'name': u'apply/<', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 260, u'asyncCaller': None}, u'name': u'doApply', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 118, u'asyncCaller': None}, u'name': u'checkPasswordMasked', u'sourceLine': u'', u'sourceId': 71, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://testing-common/LoginTestUtils.jsm', u'lineNumber': 542, u'asyncCaller': None}
[task 2020-10-04T21:10:21.284Z] 21:10:21     INFO - TEST-PASS | toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html | unmaskedStart is 0: After fill - 0 == 0 
[task 2020-10-04T21:10:21.284Z] 21:10:21     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-10-04T21:10:21.289Z] 21:10:21     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html | Unmasked to the end: After fill - 0 == 15 
[task 2020-10-04T21:10:21.289Z] 21:10:21     INFO - {u'columnNumber': 14, u'formattedStack': u'checkPasswordMasked@resource://testing-common/LoginTestUtils.jsm:551:14\ndoApply@resource://specialpowers/WrapPrivileged.jsm:118:18\napply/<@resource://specialpowers/WrapPrivileged.jsm:260:30\nwrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 18, u'formattedStack': u'doApply@resource://specialpowers/WrapPrivileged.jsm:118:18\napply/<@resource://specialpowers/WrapPrivileged.jsm:260:30\nwrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 30, u'formattedStack': u'apply/<@resource://specialpowers/WrapPrivileged.jsm:260:30\nwrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 12, u'formattedStack': u'wrapExceptions@resource://specialpowers/WrapPrivileged.jsm:206:12\napply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 12, u'formattedStack': u'apply@resource://specialpowers/WrapPrivileged.jsm:244:12\ntestConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': {u'columnNumber': 21, u'formattedStack': u'testConfirmPasswordFieldFilledWithGeneratedPassword@https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html:158:21\n', u'caller': None, u'name': u'testConfirmPasswordFieldFilledWithGeneratedPassword', u'sourceLine': u'', u'sourceId': 226, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'https://example.com/tests/toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html', u'lineNumber': 158, u'asyncCaller': None}, u'name': u'apply', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 244, u'asyncCaller': None}, u'name': u'wrapExceptions', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 206, u'asyncCaller': None}, u'name': u'apply/<', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 260, u'asyncCaller': None}, u'name': u'doApply', u'sourceLine': u'', u'sourceId': 46, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://specialpowers/WrapPrivileged.jsm', u'lineNumber': 118, u'asyncCaller': None}, u'name': u'checkPasswordMasked', u'sourceLine': u'', u'sourceId': 71, u'asyncCause': None, u'nativeSavedFrame': {}, u'filename': u'resource://testing-common/LoginTestUtils.jsm', u'lineNumber': 551, u'asyncCaller': None}
[task 2020-10-04T21:10:21.289Z] 21:10:21     INFO - Check the expected password fields are filled
[task 2020-10-04T21:10:21.289Z] 21:10:21     INFO - TEST-PASS | toolkit/components/passwordmgr/test/mochitest/test_autocomplete_password_generation_confirm.html | Field (uname) field has the expected value ```

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit auto_nag documentation.

Recent occurrences: https://treeherder.mozilla.org/logviewer?job_id=332527818&repo=autoland&lineNumber=2351

Caused by landing Bug 1690358.

It seems that focus change has occurred after generating a password because nsIEditor.unmask(0) is the only callsite, this means that we don't use auto masking, so, nsIEditor.mask() must have been called explicitly. It's also called only by here, and the function is called when focus move except user input or another autocomplete.

• https://searchfox.org/mozilla-central/rev/62ddcc03195036b355cb23b6f2e2b88d3f8099ad/toolkit/components/passwordmgr/LoginManagerChild.jsm#239-243
• https://searchfox.org/mozilla-central/rev/62ddcc03195036b355cb23b6f2e2b88d3f8099ad/toolkit/components/passwordmgr/LoginManagerChild.jsm#1879

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit auto_nag documentation.