Filed by: rmaries [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=302451307&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/UzSNF1nLQw2aThfdY_bOkg/runs/0/artifacts/public/logs/live_backing.log

[task 2020-05-15T13:29:47.772Z] 13:29:47 INFO - TEST-START | netwerk/test/unit/test_dns_disabled.js
[task 2020-05-15T13:34:47.773Z] 13:34:47 WARNING - TEST-UNEXPECTED-TIMEOUT | netwerk/test/unit/test_dns_disabled.js | Test timed out
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - TEST-INFO took 299999ms
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - >>>>>>>
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - (xpcshell/head.js) | test MAIN run_test pending (1)
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - (xpcshell/head.js) | test pending (2)
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - (xpcshell/head.js) | test MAIN run_test finished (2)
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - running event loop
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - TEST-PASS | netwerk/test/unit/test_dns_disabled.js | onLookupComplete - [onLookupComplete : 31] "1.1.1.1" == "1.1.1.1"
[task 2020-05-15T13:34:47.773Z] 13:34:47 INFO - TEST-PASS | netwerk/test/unit/test_dns_disabled.js | do_test - [do_test : 60] true == true
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - TEST-PASS | netwerk/test/unit/test_dns_disabled.js | onLookupComplete - [onLookupComplete : 33] true == true
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - PID 11988 | JavaScript error: Z:/task_1589548479/build/tests/xpcshell/tests/netwerk/test/unit/test_dns_disabled.js, line 29: NS_ERROR_NOT_AVAILABLE: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIDNSRecord.getNextAddrAsString]
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - "CONSOLE_MESSAGE: (error) [JavaScript Error: "NS_ERROR_NOT_AVAILABLE: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIDNSRecord.getNextAddrAsString]" {file: "Z:/task_1589548479/build/tests/xpcshell/tests/netwerk/test/unit/test_dns_disabled.js" line: 29}]
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - onLookupComplete@Z:/task_1589548479/build/tests/xpcshell/tests/netwerk/test/unit/test_dns_disabled.js:29:29
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - _do_main@Z:\task_1589548479\build\tests\xpcshell\head.js:242:6
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - _execute_test@Z:\task_1589548479\build\tests\xpcshell\head.js:571:5
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - @-e:1:1
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - "
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - <<<<<<<
[task 2020-05-15T13:34:47.774Z] 13:34:47 INFO - mozcrash Writing a dump to c:\users\task_1589548479\appdata\local\temp\xpc-other-on9vcy\91fbe9c9-f587-44c0-b74a-f8feaff5811f.dmp for [11988]
[task 2020-05-15T13:34:47.839Z] 13:34:47 INFO - xpcshell return code: 1

This seems to have started with the changes from bug 1636411.

https://treeherder.mozilla.org/#/jobs?repo=autoland&group_state=expanded&searchStr=windows%2C10%2Cx64%2Cshippable%2Copt%2Cxpcshell%2Ctests%2Ctest-windows10-64-shippable%2Fopt-xpcshell-e10s-1%2Cx%28x1%29&tochange=1bd7b87768127dcaeb8b8844f2e1d175e277208b&fromchange=c2658687ac2373252a5dc4b7fa9a7ef12772d6bf&selectedTaskRun=ELnGKA0PSqu84QXjRCtDLQ-0

acat, could you, please, take a look?

Set release status flags based on info from the regressing bug 1636411

Remove test case which relied on an entry being in the DNS cache, and
was most likely the cause of the intermittent failures. Also added an assert
to check the lookup result status before calling inRecord.getNextAddrAsString(),
as that was resulting in a timeout instead of a test failure. Also some minor
changes removing a few lines that were not needed.

https://hg.mozilla.org/mozilla-central/rev/4a52971214a1