Bug: Intermittent TV browser/modules/test/browser/browser_TabUnloader.js | observed the memory-pressure notification because of no discardable tab - "low-memory-ongoing" == "low-memory" - JS frame :: chrome://mochitests/content/browse
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-07-06 20:28:00+00:00
Resolved: 2021-08-03 17:04:03+00:00

**Filed by:** abutkovits [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=344495791&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/EHmPEGFUTnmM-071OqKjVw/runs/0/artifacts/public/logs/live_backing.log
**Reftest URL:** https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/EHmPEGFUTnmM-071OqKjVw/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
[task 2021-07-06T19:26:55.614Z] 19:26:55     INFO - TEST-PASS | browser/modules/test/browser/browser_TabUnloader.js | unloaded a pinned tab playing sound - 
[task 2021-07-06T19:26:55.615Z] 19:26:55     INFO - TEST-PASS | browser/modules/test/browser/browser_TabUnloader.js | right number of tabs in discard sort list - 
[task 2021-07-06T19:26:55.615Z] 19:26:55     INFO - Console message: TabUnloader discarded <webIsolated=https://example.com>
[task 2021-07-06T19:26:55.615Z] 19:26:55     INFO - Buffered messages finished
[task 2021-07-06T19:26:55.616Z] 19:26:55     INFO - TEST-UNEXPECTED-FAIL | browser/modules/test/browser/browser_TabUnloader.js | observed the memory-pressure notification because of no discardable tab - "low-memory-ongoing" == "low-memory" - JS frame :: chrome://mochitests/content/browser/browser/modules/test/browser/browser_TabUnloader.js :: test :: line 212
[task 2021-07-06T19:26:55.616Z] 19:26:55     INFO - Stack trace:
[task 2021-07-06T19:26:55.616Z] 19:26:55     INFO - chrome://mochitests/content/browser/browser/modules/test/browser/browser_TabUnloader.js:test:212
[task 2021-07-06T19:26:55.616Z] 19:26:55     INFO - GECKO(10212) | Waiting for browser load
[task 2021-07-06T19:26:55.617Z] 19:26:55     INFO - GECKO(10212) | Waiting for browser state change
[task 2021-07-06T19:26:55.617Z] 19:26:55     INFO - GECKO(10212) | [Parent 10940, IPC I/O Parent] WARNING: pipe error: 232: file /builds/worker/checkouts/gecko/ipc/chromium/src/chrome/common/ipc_channel_win.cc:544
[task 2021-07-06T19:26:55.638Z] 19:26:55     INFO - GECKO(10212) | Saw state f0001 and status 0
[task 2021-07-06T19:26:55.668Z] 19:26:55     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "https://example.com/browser/browser/modules/test/browser/file_webrtc.html" line: 0}]
[task 2021-07-06T19:26:55.680Z] 19:26:55     INFO - GECKO(10212) | Saw state c0010 and status 0
[task 2021-07-06T19:26:55.680Z] 19:26:55     INFO - GECKO(10212) | Browser got expected state change https://example.com/browser/browser/modules/test/browser/file_webrtc.html
[task 2021-07-06T19:26:55.937Z] 19:26:55     INFO - GECKO(10212) | Waiting for browser load
[task 2021-07-06T19:26:55.937Z] 19:26:55     INFO - GECKO(10212) | Waiting for browser state change
[task 2021-07-06T19:26:55.953Z] 19:26:55     INFO - GECKO(10212) | Saw state f0001 and status 0
[task 2021-07-06T19:26:56.100Z] 19:26:56     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "https://example.com/browser/browser/modules/test/browser/file_mediaPlayback.html" line: 0}]
[task 2021-07-06T19:26:56.128Z] 19:26:56     INFO - GECKO(10212) | Saw state c0010 and status 0
[task 2021-07-06T19:26:56.128Z] 19:26:56     INFO - GECKO(10212) | Browser got expected state change https://example.com/browser/browser/modules/test/browser/file_mediaPlayback.html
[task 2021-07-06T19:26:56.619Z] 19:26:56     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "https://example.com/browser/browser/modules/test/browser/file_mediaPlayback.html" line: 0}]
```