# racer-rust/racer

Rust Code Completion utility

Repository: https://github.com/racer-rust/racer
Canonical: https://ross.abutalabs.com/products/racer-rust-racer
Language: Rust
License: MIT
License Family: permissive
Last push: 2023-11-19T23:31:16+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4566, "days_push": 1018, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3354, forks 275 (observed 2026-08-28T04:07:57.910727+00:00)

## What it is
Racer (Rust Auto-Complete-er) is a CLI utility that provides Rust code completion for editors and IDEs. It is no longer actively developed, and users are directed to rust-analyzer instead.

## Use cases
- rust code completion in vim or emacs
- autocomplete for rust in my editor
- integrate rust completion into a lightweight editor
- eldoc-style rust completion
- complete rust function names and types while editing

## When to choose
- you are stuck on a legacy editor setup that only supports racer
- you need completion for a very old Rust toolchain

## When to avoid
- starting any new project - use rust-analyzer instead
- you want actively maintained tooling or stable Rust support (racer requires nightly)

## Facets
- artifact type: cli-tool
- maturity: abandoned
- function: editor, developer-tools
- domain: developer-tools, text-editors, programming-languages
- platform: cli, cross-platform, rust
- tags: code-completion, rust-analyzer-alternative, ide-support, deprecated

## Member repositories
- racer-rust/racer (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:57.910727+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:40:56.555927+00:00, confidence not recorded.
  - readme: https://github.com/racer-rust/racer (fetched 2026-08-28T04:07:57.910727+00:00, sha ec9755b9db43)
  - registry_crates: https://crates.io/api/v1/crates/racer (fetched 2026-08-29T09:33:55.435071+00:00, sha 816b449b350c)
- Data as of 2026-08-30T08:39:29.467469+00:00.