//! Deliberately broken replacement for `tests/handoff.rs`'s failure-path
//! test: starts up and stays alive, but never announces readiness - a
//! process that hung during its own startup (deadlocked, stuck on a slow
//! dependency) rather than crashing outright. Proves
//! `handoff::spawn_replacement_and_wait_for_ready` actually times out
//! instead of waiting forever.
use BufRead;