# nextest-rs/nextest

A next-generation test runner for Rust.

Repository: https://github.com/nextest-rs/nextest
Canonical: https://ross.abutalabs.com/products/nextest
Homepage: https://nexte.st
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: rust, testing, flaky-tests, cargo-plugin, cargo-subcommand, junit, nextest
Last push: 2026-08-26T20:47:05+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 84, longevity 100
- inputs: {"age_days": 1668, "days_push": 7, "days_rel": 29, "gap_med": 0.0, "n_releases_24m": 151}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3252, forks 172 (observed 2026-08-28T04:07:51.989062+00:00)

## What it is
cargo-nextest is a next-generation test runner for Rust, running tests up to 3x faster than cargo test with per-test process isolation. It includes libraries for core runner logic, metadata, and a filterset expression language, plus first-class CI support with JUnit export and retries.

## Use cases
- run Rust tests faster than cargo test
- retry flaky tests automatically
- partition tests across CI workers
- export test results as JUnit XML
- select tests with a filter expression language
- detect and time out slow tests
- stress test by looping over tests many times

## When to choose
- you maintain a Rust project with a large or slow test suite
- you need reliable, structured test reporting in CI
- you want per-test isolation, retries, and timeouts
- you need to partition tests across multiple CI machines

## When to avoid
- your project is not written in Rust
- you rely on cargo test's shared-process test execution model
- you need a test framework for languages other than Rust

## Facets
- artifact type: cli-tool
- maturity: active
- function: testing, cli, developer-tools, benchmarking
- domain: testing, developer-tools
- platform: windows, rust, cli, cross-platform
- tags: cargo-subcommand, test-runner, junit, flaky-tests, ci, rust, command-line, linux, macos

## Member repositories
- nextest-rs/nextest (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:51.989062+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 2026-08-29T18:43:53.820414+00:00, confidence not recorded.
  - readme: https://github.com/nextest-rs/nextest (fetched 2026-08-28T04:07:51.989062+00:00, sha 6e4d1acc3ff1)
  - homepage: https://nexte.st (fetched 2026-08-29T09:37:03.520957+00:00, sha bf640cca4f76)
  - site_page: https://nexte.st/docs/installation/pre-built-binaries (fetched 2026-08-29T09:37:03.523770+00:00, sha 4b2a94d2541c)
  - site_page: https://nexte.st/docs/running (fetched 2026-08-29T09:37:03.526185+00:00, sha eb7b3f9e66ce)
  - site_page: https://nexte.st/docs/configuring-nextest (fetched 2026-08-29T09:37:03.529477+00:00, sha 241046a40fef)
  - site_page: https://nexte.st/docs/integrations (fetched 2026-08-29T09:37:03.531146+00:00, sha 5fc7dffb99f3)
  - site_page: https://nexte.st/docs/design/how-it-works (fetched 2026-08-29T09:37:03.532688+00:00, sha 3021f453cf35)
  - site_page: https://nexte.st/docs/installation/from-source (fetched 2026-08-29T09:37:03.534254+00:00, sha d5e38d8bc843)
  - site_page: https://nexte.st/docs/installation/updating (fetched 2026-08-29T09:37:03.535765+00:00, sha 89c9c2b80737)
  - site_page: https://nexte.st/docs/installation/release-urls (fetched 2026-08-29T09:37:03.537449+00:00, sha b3e1dd3c3168)
- Data as of 2026-08-30T08:39:29.467469+00:00.