Bug: Intermittent TEST-UNEXPECTED-TIMEOUT | browser/components/sessionstore/test/browser_586068-select.js | application timed out after 370 seconds with no output
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-04-07 13:24:31+00:00
Resolved: 2021-06-01 17:05:37+00:00

**Filed by:** dluca [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=335704567&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/PXrTUW-sT0iX4ryNibhENA/runs/2/artifacts/public/logs/live_backing.log

---
```
INFO - TEST-PASS | browser/components/sessionstore/test/browser_586068-select.js | load 4 - # tabs that need to be restored - 
[task 2021-04-07T12:46:17.396Z] 12:46:17     INFO - TEST-PASS | browser/components/sessionstore/test/browser_586068-select.js | load 4 - # tabs that are restoring - 
[task 2021-04-07T12:46:17.397Z] 12:46:17     INFO - TEST-PASS | browser/components/sessionstore/test/browser_586068-select.js | load 4 - # tabs that has been restored - 
[task 2021-04-07T12:46:17.397Z] 12:46:17     INFO - TEST-PASS | browser/components/sessionstore/test/browser_586068-select.js | load 4 - correct tab was restored - 
[task 2021-04-07T12:46:17.398Z] 12:46:17     INFO - Buffered messages finished
[task 2021-04-07T12:46:17.399Z] 12:46:17    ERROR - TEST-UNEXPECTED-TIMEOUT | browser/components/sessionstore/test/browser_586068-select.js | application timed out after 370 seconds with no output
[task 2021-04-07T12:46:17.400Z] 12:46:17    ERROR - Force-terminating active process(es).
[task 2021-04-07T12:46:17.401Z] 12:46:17     INFO - Determining child pids from psutil...
[task 2021-04-07T12:46:17.401Z] 12:46:17     INFO - [1635, 1659, 1726, 1761, 1801, 1828, 1959]
[task 2021-04-07T12:46:17.402Z] 12:46:17     INFO - ==> process 1568 launched child process 1583
[task 2021-04-07T12:46:17.402Z] 12:46:17     INFO - ==> process 1568 launched child process 1635
[task 2021-04-07T12:46:17.403Z] 12:46:17     INFO - ==> process 1568 launched child process 1659
[task 2021-04-07T12:46:17.403Z] 12:46:17     INFO - ==> process 1568 launched child process 1726
[task 2021-04-07T12:46:17.403Z] 12:46:17     INFO - ==> process 1568 launched child process 1761
[task 2021-04-07T12:46:17.404Z] 12:46:17     INFO - ==> process 1568 launched child process 1801
[task 2021-04-07T12:46:17.404Z] 12:46:17     INFO - ==> process 1568 launched child process 1828
[task 2021-04-07T12:46:17.404Z] 12:46:17     INFO - Found child pids: set([1761, 1635, 1828, 1959, 1801, 1583, 1659, 1726])
[task 2021-04-07T12:46:17.404Z] 12:46:17     INFO - Failed to get child procs
[task 2021-04-07T12:46:17.404Z] 12:46:17     INFO - Killing process: 1761
[task 2021-04-07T12:46:17.404Z] 12:46:17     INFO - TEST-INFO | started process screentopng
[task 2021-04-07T12:46:17.673Z] 12:46:17     INFO - TEST-INFO | screentopng: exit 0
[task 2021-04-07T12:46:17.673Z] 12:46:17     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:46:47.691Z] 12:46:47     INFO - failed to kill pid 1761 after 30s
[task 2021-04-07T12:46:47.693Z] 12:46:47     INFO - Killing process: 1635
[task 2021-04-07T12:46:47.694Z] 12:46:47     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:46:47.695Z] 12:46:47     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:47:17.702Z] 12:47:17     INFO - failed to kill pid 1635 after 30s
[task 2021-04-07T12:47:17.702Z] 12:47:17     INFO - Killing process: 1828
[task 2021-04-07T12:47:17.702Z] 12:47:17     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:47:17.702Z] 12:47:17     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:47:47.743Z] 12:47:47     INFO - failed to kill pid 1828 after 30s
[task 2021-04-07T12:47:47.744Z] 12:47:47     INFO - Killing process: 1959
[task 2021-04-07T12:47:47.745Z] 12:47:47     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:47:47.746Z] 12:47:47     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:48:17.791Z] 12:48:17     INFO - failed to kill pid 1959 after 30s
[task 2021-04-07T12:48:17.791Z] 12:48:17     INFO - Killing process: 1801
[task 2021-04-07T12:48:17.791Z] 12:48:17     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:48:17.792Z] 12:48:17     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:48:47.806Z] 12:48:47     INFO - failed to kill pid 1801 after 30s
[task 2021-04-07T12:48:47.806Z] 12:48:47     INFO - Killing process: 1583
[task 2021-04-07T12:48:47.806Z] 12:48:47     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:48:47.806Z] 12:48:47     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:48:47.807Z] 12:48:47     INFO - Error: Failed to kill process 1583: psutil.NoSuchProcess no process found with pid 1583
[task 2021-04-07T12:48:47.807Z] 12:48:47     INFO - Killing process: 1659
[task 2021-04-07T12:48:47.807Z] 12:48:47     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:48:47.807Z] 12:48:47     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:49:17.825Z] 12:49:17     INFO - failed to kill pid 1659 after 30s
[task 2021-04-07T12:49:17.825Z] 12:49:17     INFO - Killing process: 1726
[task 2021-04-07T12:49:17.825Z] 12:49:17     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:49:17.825Z] 12:49:17     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:49:47.843Z] 12:49:47     INFO - failed to kill pid 1726 after 30s
[task 2021-04-07T12:49:47.843Z] 12:49:47     INFO - Killing process: 1568
[task 2021-04-07T12:49:47.843Z] 12:49:47     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-04-07T12:49:47.843Z] 12:49:47     INFO - Can't trigger Breakpad, just killing process
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - psutil found pid 1568 dead
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 1966 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 2034 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 2078 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 1959 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 2165 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 1828 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 1801 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 2124 after 30s
[task 2021-04-07T12:50:17.878Z] 12:50:17     INFO - failed to kill pid 1761 after 30s
[task 2021-04-07T12:50:17.879Z] 12:50:17     INFO - failed to kill pid 1726 after 30s
[task 2021-04-07T12:50:17.879Z] 12:50:17     INFO - failed to kill pid 1659 after 30s
[task 2021-04-07T12:50:17.879Z] 12:50:17     INFO - failed to kill pid 1635 after 30s
[task 2021-04-07T12:50:17.879Z] 12:50:17     INFO - failed to kill pid 2004 after 30s
[task 2021-04-07T12:50:17.879Z] 12:50:17     INFO - psutil found pid 1568 dead
[task 2021-04-07T12:50:17.886Z] 12:50:17  WARNING - runtests.py | Failed to get app exit code - running/crashed?
[task 2021-04-07T12:50:17.886Z] 12:50:17     INFO - TEST-INFO | Main app process: exit 0
[task 2021-04-07T12:50:17.887Z] 12:50:17     INFO - runtests.py | Application ran for: 0:13:42.199394
[task 2021-04-07T12:50:17.887Z] 12:50:17     INFO - zombiecheck | Reading PID log: /tmp/tmpd8XjqRpidlog
[task 2021-04-07T12:50:17.887Z] 12:50:17     INFO - ==> process 1568 launched child process 1583
[task 2021-04-07T12:50:17.887Z] 12:50:17     INFO - ==> process 1568 launched child process 1635
[task 2021-04-07T12:50:17.888Z] 12:50:17     INFO - ==> process 1568 launched child process 1659
[task 2021-04-07T12:50:17.888Z] 12:50:17     INFO - ==> process 1568 launched child process 1726
[task 2021-04-07T12:50:17.888Z] 12:50:17     INFO - ==> process 1568 launched child process 1761
[task 2021-04-07T12:50:17.888Z] 12:50:17     INFO - ==> process 1568 launched child process 1801
[task 2021-04-07T12:50:17.888Z] 12:50:17     INFO - ==> process 1568 launched child process 1828
[task 2021-04-07T12:50:17.889Z] 12:50:17     INFO - ==> process 1568 launched child process 1966
[task 2021-04-07T12:50:17.889Z] 12:50:17     INFO - ==> process 1568 launched child process 2004
[task 2021-04-07T12:50:17.889Z] 12:50:17     INFO - ==> process 1568 launched child process 2034
[task 2021-04-07T12:50:17.889Z] 12:50:17     INFO - ==> process 1568 launched child process 2078
[task 2021-04-07T12:50:17.889Z] 12:50:17     INFO - ==> process 1568 launched child process 2124
[task 2021-04-07T12:50:17.890Z] 12:50:17     INFO - ==> process 1568 launched child process 2165
[task 2021-04-07T12:50:17.890Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1761
[task 2021-04-07T12:50:17.890Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1635
[task 2021-04-07T12:50:17.890Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1828
[task 2021-04-07T12:50:17.891Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1801
[task 2021-04-07T12:50:17.891Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 2124
[task 2021-04-07T12:50:17.891Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1966
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1583
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 2034
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 2004
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 2078
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1659
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 1726
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - zombiecheck | Checking for orphan process with PID: 2165
[task 2021-04-07T12:50:17.892Z] 12:50:17     INFO - Stopping web server
[task 2021-04-07T12:50:17.907Z] 12:50:17     INFO - Server shut down.
[task 2021-04-07T12:50:17.943Z] 12:50:17     INFO - Web server killed.
[task 2021-04-07T12:50:17.943Z] 12:50:17     INFO - Stopping web socket server
[task 2021-04-07T12:50:17.958Z] 12:50:17     INFO - Stopping ssltunnel
[task 2021-04-07T12:50:17.979Z] 12:50:17  WARNING - leakcheck | refcount logging is off, so leaks can't be detected!
[task 2021-04-07T12:50:17.979Z] 12:50:17     INFO - runtests.py | Running tests: end.
[task 2021-04-07T12:50:18.002Z] 12:50:18     INFO - Buffered messages finished
[task 2021-04-07T12:50:18.003Z] 12:50:18     INFO -  TEST-INFO | checking window state
[task 2021-04-07T12:50:18.003Z] 12:50:18     INFO -  Browser Chrome Test Summary
[task 2021-04-07T12:50:18.003Z] 12:50:18     INFO -  	Passed: 0
[task 2021-04-07T12:50:18.003Z] 12:50:18     INFO -  	Failed: 0
[task 2021-04-07T12:50:18.004Z] 12:50:18     INFO -  	Todo: 0
[task 2021-04-07T12:50:18.004Z] 12:50:18     INFO -  	Mode: e10s
[task 2021-04-07T12:50:18.004Z] 12:50:18     INFO -  *** End BrowserChrome Test Results ***
[task 2021-04-07T12:50:18.004Z] 12:50:18     INFO - Buffered messages finished
[task 2021-04-07T12:50:18.004Z] 12:50:18     INFO - SUITE-END | took 829s
[task 2021-04-07T12:50:18.030Z] 12:50:18    ERROR - Return code: 1
[task 2021-04-07T12:50:18.031Z] 12:50:18     INFO - TinderboxPrint: mochitest-mochitest-browser-chrome<br/>86/0/0
[task 2021-04-07T12:50:18.031Z] 12:50:18    ERROR - # TBPL FAILURE #
[task 2021-04-07T12:50:18.031Z] 12:50:18  WARNING - setting return code to 2
[task 2021-04-07T12:50:18.031Z] 12:50:18    ERROR - The mochitest suite: mochitest-browser-chrome ran with return status: FAILURE
[task 2021-04-07T12:50:18.031Z] 12:50:18     INFO - Running post-action listener: _package_coverage_data
[task 2021-04-07T12:50:18.031Z] 12:50:18     INFO - Running post-action listener: _resource_record_post_action
[task 2021-04-07T12:50:18.032Z] 12:50:18     INFO - Running post-action listener: process_java_coverage_data
[task 2021-04-07T12:50:18.032Z] 12:50:18     INFO - [mozharness: 2021-04-07 12:50:18.031833Z] Finished run-tests step (success)
[task 2021-04-07T12:50:18.032Z] 12:50:18     INFO - Running post-run listener: _resource_record_post_run
[task 2021-04-07T12:50:18.107Z] 12:50:18     INFO - Validating Perfherder data against /builds/worker/workspace/mozharness/external_tools/performance-artifact-schema.json
[task 2021-04-07T12:50:18.110Z] 12:50:18     INFO - PERFHERDER_DATA: {"framework": {"name": "job_resource_usage"}, "suites": [{"subtests": [{"name": "cpu_percent", "value": 36.959878331402095}, {"name": "io_write_bytes", "value": 2183745536}, {"name": "io.read_bytes", "value": 2699264}, {"name": "io_write_time", "value": 323160}, {"name": "io_read_time", "value": 408}], "extraOptions": ["e10s", "taskcluster-m5.xlarge"], "name": "mochitest.mochitest-browser-chrome.overall"}, {"subtests": [{"name": "time", "value": 0.016151905059814453}], "name": "mochitest.mochitest-browser-chrome.start-pulseaudio"}, {"subtests": [{"name": "time", "value": 34.406558990478516}, {"name": "cpu_percent", "value": 25.136363636363637}], "name": "mochitest.mochitest-browser-chrome.install"}, {"subtests": [{"name": "time", "value": 0.00019693374633789062}], "name": "mochitest.mochitest-browser-chrome.stage-files"}, {"subtests": [{"name": "time", "value": 829.8485989570618}, {"name": "cpu_percent", "value": 37.45573671497586}], "name": "mochitest.mochitest-browser-chrome.run-tests"}]}
[task 2021-04-07T12:50:18.110Z] 12:50:18     INFO - Total resource usage - Wall time: 864s; CPU: 37.0%; Read bytes: 2699264; Write bytes: 2183745536; Read time: 408; Write time: 323160
[task 2021-04-07T12:50:18.110Z] 12:50:18     INFO - TinderboxPrint: CPU usage<br/>37.5%
[task 2021-04-07T12:50:18.111Z] 12:50:18     INFO - TinderboxPrint: I/O read bytes / time<br/>2,699,264 / 408
[task 2021-04-07T12:50:18.111Z] 12:50:18     INFO - TinderboxPrint: I/O write bytes / time<br/>2,183,745,536 / 323,160
[task 2021-04-07T12:50:18.111Z] 12:50:18     INFO - TinderboxPrint: CPU idle<br/>2,160.5 (62.7%)
[task 2021-04-07T12:50:18.111Z] 12:50:18     INFO - TinderboxPrint: CPU system<br/>62.7 (1.8%)
[task 2021-04-07T12:50:18.111Z] 12:50:18     INFO - TinderboxPrint: CPU user<br/>1,211.8 (35.2%)
[task 2021-04-07T12:50:18.111Z] 12:50:18     INFO - TinderboxPrint: Swap in / out<br/>0 / 0
[task 2021-04-07T12:50:18.112Z] 12:50:18     INFO - start-pulseaudio - Wall time: 0s; CPU: Can't collect data; Read bytes: 0; Write bytes: 0; Read time: 0; Write time: 0
[task 2021-04-07T12:50:18.112Z] 12:50:18     INFO - install - Wall time: 34s; CPU: 25.0%; Read bytes: 0; Write bytes: 81092608; Read time: 0; Write time: 19060
[task 2021-04-07T12:50:18.113Z] 12:50:18     INFO - stage-files - Wall time: 0s; CPU: Can't collect data; Read bytes: 0; Write bytes: 0; Read time: 0; Write time: 0
[task 2021-04-07T12:50:18.119Z] 12:50:18     INFO - run-tests - Wall time: 830s; CPU: 37.0%; Read bytes: 2691072; Write bytes: 1818529792; Read time: 408; Write time: 295380
[task 2021-04-07T12:50:18.262Z] 12:50:18  WARNING - returning nonzero exit status 2
[task 2021-04-07T12:50:18.285Z] cleanup
[task 2021-04-07T12:50:18.285Z] + cleanup
[task 2021-04-07T12:50:18.285Z] + local rv=2
[task 2021-04-07T12:50:18.285Z] + [[ -s /builds/worker/.xsession-errors ]]
[task 2021-04-07T12:50:18.285Z] + cp /builds/worker/.xsession-errors /builds/worker/artifacts/public/xsession-errors.log
[task 2021-04-07T12:50:18.286Z] + '[' ']'
[task 2021-04-07T12:50:18.286Z] + true
[task 2021-04-07T12:50:18.286Z] + cleanup_xvfb
[task 2021-04-07T12:50:18.286Z] ++ pidof Xvfb
[task 2021-04-07T12:50:18.290Z] + local xvfb_pid=50
[task 2021-04-07T12:50:18.290Z] + local vnc=false
[task 2021-04-07T12:50:18.290Z] + local interactive=false
[task 2021-04-07T12:50:18.290Z] + '[' -n 50 ']'
[task 2021-04-07T12:50:18.290Z] + [[ false == false ]]
[task 2021-04-07T12:50:18.290Z] + [[ false == false ]]
[task 2021-04-07T12:50:18.290Z] + kill 50
[task 2021-04-07T12:50:18.290Z] + screen -XS xvfb quit
[task 2021-04-07T12:50:18.303Z] + exit 2
[taskcluster 2021-04-07 12:50:18.703Z] === Task Finished ===
[taskcluster 2021-04-07 12:50:20.161Z] Unsuccessful task run with exit code: 2 completed in 954.167 seconds```