https://tbpl.mozilla.org/php/getParsedLog.php?id=30004967&tree=Mozilla-Inbound slave: talos-r4-snow-051 TEST-PASS | tests/test-selection.test Multiple DOM Selection | iterable selection.text with multiple DOM Selection works. TEST-PASS | tests/test-selection.test Multiple DOM Selection | iterable selection.text with multiple DOM Selection works. TEST-PASS | tests/test-selection.test Multiple DOM Selection | Two iterable selections TEST-END | tests/test-selection.test Multiple DOM Selection TEST-START | tests/test-selection.test No Selection TEST-UNEXPECTED-FAIL | tests/test-selection.test No Selection | Test output exceeded timeout (300s). Traceback (most recent call last): File "jetpack/bin/cfx", line 33, in <module> cuddlefish.run() File "/builds/slave/talos-slave/test/build/jetpack/python-lib/cuddlefish/__init__.py", line 612, in run test_all_packages(env_root, defaults=options.__dict__) File "/builds/slave/talos-slave/test/build/jetpack/python-lib/cuddlefish/__init__.py", line 494, in test_all_packages env_root=env_root) File "/builds/slave/talos-slave/test/build/jetpack/python-lib/cuddlefish/__init__.py", line 945, in run pkgdir=options.pkgdir) File "/builds/slave/talos-slave/test/build/jetpack/python-lib/cuddlefish/runner.py", line 742, in run_app OUTPUT_TIMEOUT, test_name, parseable) Exception: Test output exceeded timeout (300s). program finished with exit code 1 elapsedTime=499.946656

It's been over a month since the last failure here.

we haven't seen this failure for > 3 months