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Technology

• actix-rt
• actix-server
• Bash
• Cargo
• Content Security Policy
• GNU coreutils
• GNU grep
• HTML
• htmx
• PostgreSQL
• Rust
• sqlx
• any

6 of 6

1. grep -q exits 141 under set -o pipefail, even when it matches

   Under set -o pipefail, piping a large payload into grep -q can fail the whole pipeline even though grep found what it was looking for. Swapping the pipe for a here string fixes it.

   ▮▮▯ one layer down / checked 28 Sep 2026 / Bash · GNU grep / bash · grep · pipefail · shell · testing

2. htmx hx-on fails: unsafe-eval is not an allowed source of script

   Under a Content-Security-Policy with script-src 'self', htmx compiles hx-on attributes into a function at runtime and the browser refuses to run it. Moving the same code into a script file as an event listener fixes it.

   ▮▮▯ one layer down / checked 28 Sep 2026 / htmx 2.0.7 · Content Security Policy / htmx · csp · javascript · security

3. sqlx: Rust type i64 is not compatible with SQL type NUMERIC

   A SUM() over a BIGINT column comes back as NUMERIC in PostgreSQL, and sqlx refuses to decode that into an i64 field. Casting the sum to BIGINT in the query fixes it.

   ▮▮▯ one layer down / checked 28 Sep 2026 / sqlx 0.8.6 · PostgreSQL / rust · sqlx · postgresql · database

4. stat -c %F reports the wrong file type under a non-English locale

   GNU stat translates its %F file-type field, so code that matches the English words regular file or directory misreads every path once the locale is, say, Swedish. Pinning LC_ALL=C on the stat call fixes it.

   ▮▮▯ one layer down / checked 28 Sep 2026 / GNU coreutils · Rust / locale · stat · coreutils · ssh · rust

5. cargo build fails but cargo test passes: could not find net in actix_rt

   After a dependency bump, a plain cargo build stopped with could not find net in actix_rt while cargo test kept passing. actix-server 2.8.0 never asks for the actix-rt features it needs, and updating it to 2.9.5, which does, fixes the build.

   ▮▮▮ deep / checked 26 Sep 2026 / actix-server 2.8.0 · actix-rt 2.14 and newer · Cargo / rust · cargo · dependencies · features

6. Scraped text runs as HTML in a generated report

   My web scraper wrote scraped titles and links straight into its HTML report, so a page could slip its own markup or a javascript: link into the file. One shared escape function, plus a rule that only http and https addresses become links, fixed it.

   ▮▮▯ one layer down / checked 23 Sep 2026 / Rust · HTML / rust · html · security · escaping