Unit tests on a [[ https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ExternalData/+/832727 | patch ]] to a MediaWiki extension [[ https://integration.wikimedia.org/ci/job/quibble-vendor-mysql-php72-noselenium-docker/174487/console | fail ]] strangely:
```counterexample
00:01:22.185 <<< Finish: npm install in /workspace/src, in 7.334 s
00:01:22.185
00:01:22.362 INFO:quibble.commands:<<< Finish: Run Post-dependency install, pre-database dependent steps in parallel (concurrency=3):
00:01:22.362 * PHPUnit unit tests
"""00:01:22.362 * Install MediaWiki, db=<MySQL /workspace/db/quibble-mysql-btssh3_8/socket> vendor=True
02:09:38 Traceback (most recent call last):00:01:22.362 * npm install in /workspace/src, in 7.545 s
02:09:38 File "/usr/lib/python3.7/multiprocessing/pool.py", line 121, in worker00:01:22.363 INFO:backend.MySQL:Terminating MySQL
02:09:38 result = (True0:01:24.072 multiprocessing.pool.RemoteTraceback:
00:01:24.072 """
00:01:24.072 Traceback (most recent call last):
00:01:24.072 File "/usr/lib/python3.7/multiprocessing/pool.py", func(*argsline 121, **kwds))in worker
02:09:38 File "/usr/local/lib/python3.7/dist-packages/quibble/commands.py"00:01:24.072 result = (True, line 1059func(*args, in _run_child**kwds))
02:09:38 captured = collector.read()00:01:24.072 File "/usr/local/lib/python3.7/dist-packages/quibble/commands.py", line 1059, in _run_child
02:09:38 File "/usr/lib/python3.7/codecs.py", line 322, in decode00:01:24.072 captured = collector.read()
02:09:38 (result, consumed) = self._buffer_de00:01:24.072 File "/usr/lib/python3.7/code(datacs.py", self.errorsline 322, final)in decode
02:09:38 UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position 18607: invalid continuation byte00:01:24.072 (result, consumed) = self._buffer_decode(data, self.errors, final)
02:09:38 """00:01:24.072 UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position 18607: invalid continuation byte
02:09:3800:01:24.072 """
00:01:24.072
02:09:3800:01:24.072 The above exception was the direct cause of the following exception:
02:09:3800:01:24.072
02:09:3800:01:24.072 Traceback (most recent call last):
00:01:24.072 File "/usr/local/bin/quibble", line 10, in <module>
02:09:38 File "/usr/local/bin/quibble", line 10, in <module>00:01:24.072 sys.exit(main())
02:09:38 sys.exit(main())00:01:24.072 File "/usr/local/lib/python3.7/dist-packages/quibble/cmd.py", line 783, in main
02:09:38 File "/usr/local/lib/python3.7/dist-packages/quibble/cmd.py"00:01:24.072 cmd.execute(plan, line 783, in maindry_run=args.dry_run)
02:09:38 cmd.execute(plan00:01:24.072 File "/usr/local/lib/python3.7/dist-packages/quibble/cmd.py", dry_run=args.dry_run)line 512, in execute
02:09:38 File "/usr/local/lib/python3.7/dist-packages/quibble/cmd.py", line 512, in execute00:01:24.072 quibble.commands.execute_command(command)
02:09:38 00:01:24.072 File "/usr/local/lib/python3.7/dist-packages/quibble./commands.execute_command(py", line 26, in execute_command)
02:09:38 File "/usr/local/lib/python3.7/dist-packages/quibble/00:01:24.073 commands.py", line 26, in .execute_command()
02:09:38 00:01:24.073 File "/usr/local/lib/python3.7/dist-packages/quibble/command.s.py", line 1027, in execute()
02:09:38 File "/usr/local/lib/python3.7/dist-packages/quibble/commands.py", line 102700:01:24.073 for error, in executecapture in results_in_progress:
02:09:38 for error00:01:24.073 File "/usr/local/lib/python3.7/dist-packages/quibble/util.py", line 143, capture in results_in_progress:in __iter__
02:09:38 File "/usr/local/lib/python3.7/dist-packages/quibble/util.py", line 143, in __iter__00:01:24.073 for obj in self.iterable:
02:09:38 for obj in self.iterable:00:01:24.073 File "/usr/lib/python3.7/multiprocessing/pool.py", line 748, in next
02:09:38 File "/usr/lib/python3.7/multiprocessing/pool.py", line 748, in next00:01:24.073 raise value
02:09:38 raise value00:01:24.073 UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position 18607: invalid continuation byte
02:09:38 UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position 18607: invalid continuation byte00:01:24.901 Build step 'Execute shell' marked build as failure
```