Rust Cargo worktrees share dependencies with 60% less disk

The author explains a method for sharing a single Cargo build directory across multiple Git worktrees in Rust projects, reducing disk usage by up to 60 percent. By configuring profile rustflags with a unique per-worktree hash, dependencies are shared while individual worktree crates remain distinct. Additionally, using unstable fine-grained locking allows multiple worktrees to build concurrently without blocking. Open article →