{"adoption": {"forks": 605, "observed_at": "2026-08-28T04:05:01.716048+00:00", "stars": 1547}, "canonical_url": "https://ross.abutalabs.com/products/rust-lang-reference", "card": {"archived": false, "artifact_type": "learning-resource", "description": "The Rust Reference", "domain": ["programming-languages", "documentation", "developer-tools"], "enriched": true, "function": ["documentation"], "health_score": 80, "homepage": "https://doc.rust-lang.org/nightly/reference/", "language": "Rust", "license": "Apache-2.0", "license_family": "permissive", "maturity": "active", "member_repos": ["rust-lang/reference"], "name": "rust-lang/reference", "platform": ["rust"], "pushed_at": "2026-08-25T19:48:31+00:00", "repo": "rust-lang/reference", "stars": 1547, "tags": ["rust-language", "language-specification", "reference-book", "mdbook", "web-server"], "topics": ["rust-lang", "reference", "documentation", "rust"], "urls": [], "use_cases": ["look up exact Rust language semantics", "check how Rust borrow checker rules are specified", "find the official definition of Rust syntax and grammar", "verify language behavior details against the compiler", "contribute corrections to Rust language documentation"], "what_it_is": "The Rust Reference is the official primary reference documenting the Rust programming language's syntax, semantics, and behavior, published as an online book. This repository contains the source for the book, which is actively maintained alongside Rust's six-week release cycle.", "when_to_avoid": ["you are a beginner learning Rust for the first time - use The Rust Book instead", "you need standard library API documentation - use std docs", "you need rustc or Cargo tool documentation - they have separate books"], "when_to_choose": ["you need authoritative details on Rust language semantics or grammar", "you are writing tools or documentation that must match Rust's specification", "you want to clarify ambiguous or undocumented Rust behavior"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/rust-lang-reference", "repo": "rust-lang/reference", "role": "main", "score": 77}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:05:01.716048+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T04:30:30.083850+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "47dba2d903608e968801b18ca1329eda2f21ad57f9ce27590ae46c6cfba2a82e", "fetched_at": "2026-08-28T04:05:01.716048+00:00", "kind": "readme", "missing": false, "url": "https://github.com/rust-lang/reference"}, {"content_hash": "d27050fba20f47f99787d7b2da020dbecb0385cca903156947c72ab9e15e2bf5", "fetched_at": "2026-08-29T11:31:22.976526+00:00", "kind": "homepage", "missing": false, "url": "https://doc.rust-lang.org/nightly/reference/"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_releases"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3472, "days_push": 8, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 77, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}