Crates / new_debug_unreachable / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to new_debug_unreachable
Short answerThe closest alternatives to new_debug_unreachable on crates.io data are lazy_static (2.4M real downloads a day), quick-error (1.1M real downloads a day), derive_builder (633K real downloads a day). Of the 8 we list, the most used is lazy_static, and 2 shipped a release in the last year. new_debug_unreachable itself gets 691,350 a day with 23 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs new_debug_unreachable | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| lazy_static Foundational | 2,449,997 | 3.54x | 10,953 | 23d | category No standard library, category Rust patterns, keyword "macro" | compare |
| quick-error Established | 1,130,044 | 1.63x | 293 | 5.5y | category Rust patterns, keyword "macro" | compare |
| derive_builder Widely used | 633,349 | 0.92x | 1,332 | 2.0y | category Rust patterns, keyword "macro" | compare |
| derive_builder_macro Pulled in | 624,830 | 0.90x | 1 | 2.0y | category Rust patterns, keyword "macro" | compare |
| educe Established | 380,869 | 0.55x | 191 | 41d | category No standard library, category Rust patterns, keyword "macro" | compare |
| derivative Established | 320,737 | 0.46x | 616 | 5.7y | category Rust patterns, keyword "macro" | compare |
| maplit Established | 266,928 | 0.39x | 819 | 7.2y | category Rust patterns, keyword "macro" | compare |
| enum_dispatch Established | 261,983 | 0.38x | 358 | 2.6y | category Rust patterns, keyword "optimization" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with new_debug_unreachable; read its description before you swap.
- More dependents means more answered questions and a smaller chance it disappears.
- Check the last release against how fast you need fixes. For new_debug_unreachable: is it still maintained?
Rules
Alternatives = tracked crates (top 1000 by downloads) that share a specific crates.io category (2 points each) or keyword (3 points each) with new_debug_unreachable, most similar first; its own parts (same name prefix) and crates it depends on or that depend on it are left out, because those are companions, not substitutes. Real downloads = quiet-day median, crates.io data Oct 24, 2026. Built when we find 3 or more.
Up next
The closest alternative: Foundational and steady. 2,449,997 real downloads a day.lazy_staticRust crate. A macro for declaring lazily evaluated statics in Rust. Real use: 2.4M downloads a day on quiet days; 10,953 crates depend on it.Read it next →Also worth your time