Public recordGood
Software health reportschema 0.11.0 · metrics 1.13.0 · 2026-07-15 20:49 UTC
rust-lang / rustlings
:crab: Small exercises to get you used to reading and writing Rust code!
rust-lang/rustlings holds a health index of 72 out of 100, placing it in the Good band. It scores highest on Community & Adoption (81/100) and lowest on AI Readiness (53/100). It was last updated 7 days ago. 2 contributors account for most of its recent work.
72
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At risk ceiling of 49. AI Readiness sits outside the overall score.
72
Excellent85-100Exemplary; meets essentially all checked criteria
Good70-84Healthy; minor gaps
Moderate50-69Acceptable with notable gaps; review recommended
At risk30-49Significant weaknesses; adoption warrants caution
Critical1-29Severe problems (abandoned, single-maintainer, no hygiene)
Score profile
Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.
Ownership
The Rust Programming LanguageOrganization
17,760 followers246 public repossince Sep 2013
This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish | Tags |
|---|---|---|---|---|---|---|
| crates.io | rustlings | 6.5.0 | 7,365 | 19 | 327 days ago | learningexercise |
| crates.io | rustlings-macros | 6.5.0 | 7,245 | 18 | 327 days ago | — |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
78
Development activity
84Good
How it's scored
| 36/36 | Push recency — last push 7 days ago |
| 20.1/36 | Commit cadence — 29/52 weeks with commits |
| 18/18 | Commit volume — 127 commits in the last year |
| 10/10 | OpenSSF Scorecard: Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 |
Inputs used
| commits_last_year | 127 |
| human_commit_share | — |
| days_since_last_push | 7 |
| active_weeks_last_year | 29 |
Release discipline
70Good
How it's scored
| 27/27 | Ships releases — 46 releases published |
| 16.2/36 | Release recency — latest release 327 days ago |
| 19.8/27 | Release cadence — a release every ~91.9 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 46 |
| latest_release_tag | v6.5.0 |
| releases_from_tags | no |
| days_since_latest_release | 327 |
| mean_days_between_releases | 91.9 |
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
81
Popularity & adoption
99Excellent
How it's scored
| 60/60 | Stars — 63,539 stars |
| 25/25 | Forks — 11,225 forks |
| 14.2/15 | Watchers — 352 watchers |
Inputs used
| forks | 11,225 |
| stars | 63,539 |
| watchers | 352 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
70Good
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (MIT) |
| 18/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| has_contributing | yes |
| has_issue_template | no |
| has_code_of_conduct | no |
| has_pull_request_template | no |
Ecosystem adoption (downloads)
69Moderate
How it's scored
| 55.5/80 | Monthly downloads — 14,610 downloads/month across crates |
| 0/20 | Registry dependents — not reported by this ecosystem |
Inputs used
| packages | rustlings, rustlings-macros |
| dependents | — |
| ecosystems | crates |
| total_downloads | 414,083 |
| monthly_downloads | 14,610 |
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
75
Maintainer resilience (bus factor)
63Moderate
How it's scored
| 25.2/54 | Bus factor — 2 contributor(s) cover half of all commits |
| 14.2/22.5 | Commit distribution — top contributor authored 37% of commits |
| 13.5/13.5 | Contributor breadth — 100 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 32 contributing companies or organizations |
Inputs used
| bus_factor | 2 |
| contributors_sampled | 100 |
| top_contributor_share | 0.368 |
How it's scored
| 45.1/46.8 | Issue resolution — 96% of issues closed |
| 22.7/38.3 | PR acceptance — 943/1,590 decided PRs merged |
| 4.5/15 | OpenSSF Scorecard: Code-Review — Found 6/18 approved changesets -- score normalized to 3 |
Inputs used
| merged_prs | 943 |
| open_issues | 27 |
| closed_issues | 738 |
| issue_closed_ratio | 0.965 |
| closed_unmerged_prs | 647 |
Ownership & stewardship
80Good
How it's scored
| 30/30 | Ownership backing — organization-owned |
| 0/20 | Verified domain |
| 25/25 | Owner reach — 17,760 followers of rust-lang |
| 25/25 | Track record — 246 public repos, account ~12 yr old |
Inputs used
| followers | 17,760 |
| owner_type | Organization |
| is_verified | — |
| owner_login | rust-lang |
| public_repos | 246 |
| account_age_days | 4,690 |
Package maintenance
91Excellent
How it's scored
| 25/25 | Published & resolvable — 2 package(s) on crates |
| 26/35 | Publish recency — latest publish 327 days ago |
| 20/20 | Version history — 19 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | rustlings, rustlings-macros |
| ecosystems | crates |
| any_deprecated | no |
| min_days_since_publish | 327 |
Engineering Quality
Are baseline engineering and documentation practices in place?
66
Engineering practices
66Moderate
How it's scored
| 24/24 | CI workflows — 2 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 18/20 | OpenSSF Scorecard: CI-Tests — 9 out of 10 merged PRs checked by a CI test -- score normalized to 9 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
65Moderate
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 15/15 | Documentation / homepage site — https://rustlings.rust-lang.org |
| 10/10 | Repository description |
| 10/10 | Topics — 4 topics |
| 0/10 | Wiki |
Inputs used
| topics | rust, rustlings, beginner-friendly, exercises |
| has_wiki | no |
| homepage | https://rustlings.rust-lang.org |
| has_readme | yes |
| has_docs_dir | no |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
58
Security posture
58Moderate
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — branch protection not enabled on development/release branches |
| 2.2/2.5 | CI-Tests — 9 out of 10 merged PRs checked by a CI test -- score normalized to 9 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 2.2/7.5 | Code-Review — Found 6/18 approved changesets -- score normalized to 3 |
| 2.5/2.5 | Contributors — project has 32 contributing companies or organizations |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 7.5/7.5 | Dependency-Update-Tool — update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.5/2.5 | License — license file detected |
| 7.5/7.5 | Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 |
| 0/5 | Packaging — no data |
| 0/5 | Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
| 0/5 | SAST — SAST tool is not run on all commits -- score normalized to 0 |
| 5/5 | Security-Policy — security policy file detected |
| 0/7.5 | Signed-Releases — no data |
| 0/7.5 | Token-Permissions — detected GitHub workflow tokens with excessive permissions |
| 6.8/7.5 | Vulnerabilities — 1 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 16 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 2 |
| scorecard_aggregate | 5.8 |
Excluded from scoring (no data or not applicable): packaging, signed_releases. Remaining weights renormalized.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score.
53
Agent context & guidance
1Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 0/40 | Legible commit history — no data |
Inputs used
| has_llms_txt | no |
| legible_history_share | — |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.
How it's scored
| 18/18 | One-command bootstrap — website/justfile |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Rust (statically typed) |
| 10/10 | Reproducible environment — lockfile |
| 0/10 | Demonstrated agent practice — no data |
| 0/8 | Automated maintenance — no data |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | Cargo.lock |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | website/justfile |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | — |
| toolchain_manifests | — |
| dependency_bot_commit_share | — |
Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.
Code legibility for models
100Excellent
How it's scored
| 45/45 | Type-checkable code — Rust (statically typed) |
| 55/55 | Manageable file sizes — 0/220 source files over 60KB |
Inputs used
| primary_language | Rust |
| largest_source_bytes | 23,603 |
| source_files_sampled | 220 |
| oversized_source_files | 0 |
Key facts
63,539GitHub stars
100contributors
127commits, last 12 months
7days since last push
46releases
2bus factor
27open issues
crates.io, npmpackage ecosystems
Data collection warnings
- Could not fetch crates package 'exercises' from its registry
More detail
OpenSSF Scorecard 5.8 / 10
5.8aggregate
Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).
| 10 | Binary-Artifacts | no binaries found in the repo |
| 0 | Branch-Protection | branch protection not enabled on development/release branches |
| 9 | CI-Tests | 9 out of 10 merged PRs checked by a CI test -- score normalized to 9 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 3 | Code-Review | Found 6/18 approved changesets -- score normalized to 3 |
| 10 | Contributors | project has 32 contributing companies or organizations |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 10 | Dependency-Update-Tool | update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 10 | License | license file detected |
| 10 | Maintained | 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 |
| n/a | Packaging | packaging workflow not detected |
| 0 | Pinned-Dependencies | dependency not pinned by hash detected -- score normalized to 0 |
| 0 | SAST | SAST tool is not run on all commits -- score normalized to 0 |
| 10 | Security-Policy | security policy file detected |
| n/a | Signed-Releases | no releases found |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 9 | Vulnerabilities | 1 existing vulnerabilities detected |
Direct dependencies 13
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| crates.io | anyhow | 1 | Cargo.toml |
| crates.io | clap | 4 | Cargo.toml |
| crates.io | crossterm | 0.29 | Cargo.toml |
| crates.io | notify | 8 | Cargo.toml |
| crates.io | rustlings-macros | =6.5.0 | Cargo.toml |
| crates.io | serde_json | 1 | Cargo.toml |
| crates.io | serde | — | Cargo.toml |
| crates.io | shlex | 1 | Cargo.toml |
| crates.io | toml | — | Cargo.toml |
| crates.io | quote | 1 | rustlings-macros/Cargo.toml |
| crates.io | serde | — | rustlings-macros/Cargo.toml |
| crates.io | toml | — | rustlings-macros/Cargo.toml |
| npm | @tailwindcss/cli | ^4 | website/package.json |
All dependencies 110
Full resolved dependency set from the GitHub dependency graph: 11 direct and 99 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| crates.io | anyhow | 1.0.102 | direct |
| crates.io | clap | 4.6.1 | direct |
| crates.io | crossterm | 0.29.0 | direct |
| crates.io | notify | 8.2.0 | direct |
| crates.io | quote | — | direct |
| crates.io | quote | 1.0.45 | direct |
| crates.io | serde | 1.0.228 | direct |
| crates.io | serde_json | 1.0.149 | direct |
| crates.io | shlex | 1.3.0 | direct |
| crates.io | toml | 1.1.2+spec-1.1.0 | direct |
| npm | @tailwindcss/cli | ^4 | direct |
| crates.io | anstream | 1.0.0 | indirect |
| crates.io | anstyle | 1.0.14 | indirect |
| crates.io | anstyle-parse | 1.0.0 | indirect |
| crates.io | anstyle-query | 1.1.5 | indirect |
| crates.io | anstyle-wincon | 3.0.11 | indirect |
| crates.io | bitflags | 2.11.1 | indirect |
| crates.io | cfg-if | 1.0.4 | indirect |
| crates.io | clap_builder | 4.6.0 | indirect |
| crates.io | clap_derive | 4.6.1 | indirect |
| crates.io | clap_lex | 1.1.0 | indirect |
| crates.io | colorchoice | 1.0.5 | indirect |
| crates.io | crossterm_winapi | 0.9.1 | indirect |
| crates.io | document-features | 0.2.12 | indirect |
| crates.io | equivalent | 1.0.2 | indirect |
| crates.io | errno | 0.3.14 | indirect |
| crates.io | fastrand | 2.4.1 | indirect |
| crates.io | foldhash | 0.1.5 | indirect |
| crates.io | fsevent-sys | 4.1.0 | indirect |
| crates.io | getrandom | 0.4.2 | indirect |
| crates.io | hashbrown | 0.15.5 | indirect |
| crates.io | hashbrown | 0.17.1 | indirect |
| crates.io | heck | 0.5.0 | indirect |
| crates.io | id-arena | 2.3.0 | indirect |
| crates.io | indexmap | 2.14.0 | indirect |
| crates.io | inotify | 0.11.1 | indirect |
| crates.io | inotify-sys | 0.1.5 | indirect |
| crates.io | is_terminal_polyfill | 1.70.2 | indirect |
| crates.io | itoa | 1.0.18 | indirect |
| crates.io | kqueue | 1.1.1 | indirect |
| crates.io | kqueue-sys | 1.1.1 | indirect |
| crates.io | leb128fmt | 0.1.0 | indirect |
| crates.io | libc | 0.2.186 | indirect |
| crates.io | linux-raw-sys | 0.12.1 | indirect |
| crates.io | litrs | 1.0.0 | indirect |
| crates.io | lock_api | 0.4.14 | indirect |
| crates.io | log | 0.4.29 | indirect |
| crates.io | memchr | 2.8.0 | indirect |
| crates.io | mio | 1.2.0 | indirect |
| crates.io | notify-types | 2.1.0 | indirect |
| crates.io | once_cell | 1.21.4 | indirect |
| crates.io | once_cell_polyfill | 1.70.2 | indirect |
| crates.io | parking_lot | 0.12.5 | indirect |
| crates.io | parking_lot_core | 0.9.12 | indirect |
| crates.io | prettyplease | 0.2.37 | indirect |
| crates.io | proc-macro2 | 1.0.106 | indirect |
| crates.io | r-efi | 6.0.0 | indirect |
| crates.io | redox_syscall | 0.5.18 | indirect |
| crates.io | rustix | 1.1.4 | indirect |
| crates.io | same-file | 1.0.6 | indirect |
| crates.io | scopeguard | 1.2.0 | indirect |
| crates.io | semver | 1.0.28 | indirect |
| crates.io | serde_core | 1.0.228 | indirect |
| crates.io | serde_derive | 1.0.228 | indirect |
| crates.io | serde_spanned | 1.1.1 | indirect |
| crates.io | signal-hook | 0.3.18 | indirect |
| crates.io | signal-hook-mio | 0.2.5 | indirect |
| crates.io | signal-hook-registry | 1.4.8 | indirect |
| crates.io | smallvec | 1.15.1 | indirect |
| crates.io | strsim | 0.11.1 | indirect |
| crates.io | syn | 2.0.117 | indirect |
| crates.io | tempfile | 3.27.0 | indirect |
| crates.io | toml_datetime | 1.1.1+spec-1.1.0 | indirect |
| crates.io | toml_parser | 1.1.2+spec-1.1.0 | indirect |
| crates.io | toml_writer | 1.1.1+spec-1.1.0 | indirect |
| crates.io | unicode-ident | 1.0.24 | indirect |
| crates.io | unicode-xid | 0.2.6 | indirect |
| crates.io | utf8parse | 0.2.2 | indirect |
| crates.io | walkdir | 2.5.0 | indirect |
| crates.io | wasi | 0.11.1+wasi-snapshot-preview1 | indirect |
| crates.io | wasip2 | 1.0.3+wasi-0.2.9 | indirect |
| crates.io | wasip3 | 0.4.0+wasi-0.3.0-rc-2026-01-06 | indirect |
| crates.io | wasm-encoder | 0.244.0 | indirect |
| crates.io | wasm-metadata | 0.244.0 | indirect |
| crates.io | wasmparser | 0.244.0 | indirect |
| crates.io | winapi | 0.3.9 | indirect |
| crates.io | winapi-i686-pc-windows-gnu | 0.4.0 | indirect |
| crates.io | winapi-util | 0.1.11 | indirect |
| crates.io | winapi-x86_64-pc-windows-gnu | 0.4.0 | indirect |
| crates.io | windows-link | 0.2.1 | indirect |
| crates.io | windows-sys | 0.60.2 | indirect |
| crates.io | windows-sys | 0.61.2 | indirect |
| crates.io | windows-targets | 0.53.5 | indirect |
| crates.io | windows_aarch64_gnullvm | 0.53.1 | indirect |
| crates.io | windows_aarch64_msvc | 0.53.1 | indirect |
| crates.io | windows_i686_gnu | 0.53.1 | indirect |
| crates.io | windows_i686_gnullvm | 0.53.1 | indirect |
| crates.io | windows_i686_msvc | 0.53.1 | indirect |
| crates.io | windows_x86_64_gnu | 0.53.1 | indirect |
| crates.io | windows_x86_64_gnullvm | 0.53.1 | indirect |
| crates.io | windows_x86_64_msvc | 0.53.1 | indirect |
| crates.io | winnow | 1.0.2 | indirect |
| crates.io | wit-bindgen | 0.51.0 | indirect |
| crates.io | wit-bindgen | 0.57.1 | indirect |
| crates.io | wit-bindgen-core | 0.51.0 | indirect |
| crates.io | wit-bindgen-rust | 0.51.0 | indirect |
| crates.io | wit-bindgen-rust-macro | 0.51.0 | indirect |
| crates.io | wit-component | 0.244.0 | indirect |
| crates.io | wit-parser | 0.244.0 | indirect |
| crates.io | zmij | 1.0.21 | indirect |
Raw JSON report machine-readable
{
"data": {
"repo": {
"topics": [
"rust",
"rustlings",
"beginner-friendly",
"exercises"
],
"is_fork": false,
"size_kb": 4381,
"has_wiki": false,
"homepage": "https://rustlings.rust-lang.org",
"languages": {
"CSS": 1004,
"HTML": 6420,
"Just": 93,
"Rust": 336149,
"Shell": 242
},
"pushed_at": "2026-07-08T08:09:04Z",
"created_at": "2015-09-15T02:25:18Z",
"owner_type": "Organization",
"updated_at": "2026-07-15T19:51:48Z",
"description": ":crab: Small exercises to get you used to reading and writing Rust code!",
"is_archived": false,
"is_disabled": false,
"license_spdx": "MIT",
"default_branch": "main",
"primary_language": "Rust",
"significant_languages": [
"Rust"
]
},
"owner": {
"blog": "https://www.rust-lang.org",
"name": "The Rust Programming Language",
"type": "Organization",
"login": "rust-lang",
"company": null,
"location": "United States of America",
"followers": 17760,
"avatar_url": "https://avatars.githubusercontent.com/u/5430905?v=4",
"created_at": "2013-09-10T21:48:20Z",
"is_verified": null,
"public_repos": 246,
"account_age_days": 4690
},
"activity": {
"releases_count": 46,
"commits_last_year": 127,
"latest_release_at": "2025-08-21T22:07:22Z",
"latest_release_tag": "v6.5.0",
"releases_from_tags": false,
"days_since_last_push": 7,
"active_weeks_last_year": 29,
"days_since_latest_release": 327,
"mean_days_between_releases": 91.9
},
"community": {
"has_readme": true,
"has_license": true,
"has_description": true,
"has_contributing": true,
"health_percentage": 62,
"has_issue_template": false,
"has_code_of_conduct": false,
"has_pull_request_template": false
},
"ecosystem": {
"packages": [
{
"name": "rustlings",
"exists": true,
"license": "MIT",
"keywords": [
"learning",
"exercise"
],
"ecosystem": "crates",
"matches_repo": true,
"registry_url": "https://crates.io/crates/rustlings",
"is_deprecated": false,
"latest_version": "6.5.0",
"repository_url": "https://github.com/rust-lang/rustlings",
"versions_count": 19,
"total_downloads": 210787,
"dependents_count": null,
"deprecation_note": null,
"maintainers_count": null,
"monthly_downloads": 7365,
"first_published_at": "2022-04-08T07:08:57.977550Z",
"latest_published_at": "2025-08-21T22:05:31.382903Z",
"latest_version_yanked": false,
"days_since_latest_publish": 327
},
{
"name": "rustlings-macros",
"exists": true,
"license": "MIT",
"keywords": [],
"ecosystem": "crates",
"matches_repo": true,
"registry_url": "https://crates.io/crates/rustlings-macros",
"is_deprecated": false,
"latest_version": "6.5.0",
"repository_url": "https://github.com/rust-lang/rustlings",
"versions_count": 18,
"total_downloads": 203296,
"dependents_count": null,
"deprecation_note": null,
"maintainers_count": null,
"monthly_downloads": 7245,
"first_published_at": "2024-04-16T02:04:49.249498Z",
"latest_published_at": "2025-08-21T22:05:17.743648Z",
"latest_version_yanked": false,
"days_since_latest_publish": 327
}
]
},
"popularity": {
"forks": 11225,
"stars": 63539,
"watchers": 352,
"open_issues_and_prs": 40
},
"ai_readiness": {
"has_nix": false,
"example_dirs": [],
"has_llms_txt": false,
"has_dockerfile": false,
"has_mcp_signal": false,
"bootstrap_files": [
"website/justfile"
],
"api_schema_files": [],
"has_devcontainer": false,
"typecheck_configs": [],
"largest_source_bytes": 23603,
"source_files_sampled": 220,
"oversized_source_files": 0,
"agent_instruction_files": [],
"agent_instruction_max_bytes": null
},
"dependencies": {
"manifests": [
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},
{
"key": "contributors",
"name": "Contributors",
"detail": "project has 32 contributing companies or organizations",
"points": 2.5,
"status": "met",
"details": [],
"max_points": 2.5
},
{
"key": "dangerous_workflow",
"name": "Dangerous-Workflow",
"detail": "no dangerous workflow patterns detected",
"points": 10,
"status": "met",
"details": [],
"max_points": 10
},
{
"key": "dependency_update_tool",
"name": "Dependency-Update-Tool",
"detail": "update tool detected",
"points": 7.5,
"status": "met",
"details": [],
"max_points": 7.5
},
{
"key": "fuzzing",
"name": "Fuzzing",
"detail": "project is not fuzzed",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "license",
"name": "License",
"detail": "license file detected",
"points": 2.5,
"status": "met",
"details": [],
"max_points": 2.5
},
{
"key": "maintained",
"name": "Maintained",
"detail": "30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10",
"points": 7.5,
"status": "met",
"details": [],
"max_points": 7.5
},
{
"key": "packaging",
"name": "Packaging",
"detail": "packaging workflow not detected",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 5
},
{
"key": "pinned_dependencies",
"name": "Pinned-Dependencies",
"detail": "dependency not pinned by hash detected -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "sast",
"name": "SAST",
"detail": "SAST tool is not run on all commits -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "security_policy",
"name": "Security-Policy",
"detail": "security policy file detected",
"points": 5,
"status": "met",
"details": [],
"max_points": 5
},
{
"key": "signed_releases",
"name": "Signed-Releases",
"detail": "no releases found",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 7.5
},
{
"key": "token_permissions",
"name": "Token-Permissions",
"detail": "detected GitHub workflow tokens with excessive permissions",
"points": 0,
"status": "missed",
"details": [],
"max_points": 7.5
},
{
"key": "vulnerabilities",
"name": "Vulnerabilities",
"detail": "1 existing vulnerabilities detected",
"points": 6.8,
"status": "partial",
"details": [],
"max_points": 7.5
}
]
},
{
"key": "high_risk_jurisdiction_exposure",
"band": "excellent",
"name": "High-Risk Jurisdiction Exposure",
"note": "Only high-confidence self-published location evidence affects this multiplier. Ambiguous matches are review-only; country evidence is not proof of nationality, citizenship, legal registration, malicious intent, or sanctions status.",
"notes": [
{
"code": "jurisdiction_evidence_limits",
"params": {}
}
],
"value": 100,
"inputs": {
"meaning": "self-published location evidence; not nationality or citizenship",
"red_flag": false,
"exposures": [],
"policy_countries": [
"Russia",
"Iran",
"North Korea"
],
"review_only_matches": 0,
"assessed_self_published_locations": 7
},
"components": [
{
"key": "policy_exposure_multiplier",
"name": "Policy exposure multiplier",
"detail": "no confirmed policy-scope location match",
"points": 100,
"status": "met",
"details": [
{
"code": "jurisdiction_no_match",
"params": {}
}
],
"max_points": 100
}
]
}
],
"description": "Are visible security and supply-chain practices strong, with no malicious dependency and no unresolved high-risk jurisdiction exposure?"
},
{
"key": "ai_readiness",
"band": "moderate",
"name": "AI Readiness",
"value": 53,
"weight": 0,
"metrics": [
{
"key": "ai_agent_context",
"band": "critical",
"name": "Agent context & guidance",
"note": "Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.",
"notes": [
{
"code": "excluded_no_data",
"params": {
"components": [
"legible_commit_history"
]
}
},
{
"code": "weights_renormalized",
"params": {}
}
],
"value": 1,
"inputs": {
"has_llms_txt": false,
"legible_history_share": null,
"agent_instruction_files": [],
"agent_instruction_max_bytes": null
},
"components": [
{
"key": "agent_instructions",
"name": "Agent instructions",
"detail": "no CLAUDE.md / AGENTS.md / editor rules",
"points": 0,
"status": "missed",
"details": [
{
"code": "no_agent_instructions",
"params": {}
}
],
"max_points": 45
},
{
"key": "machine_readable_docs_llms_txt",
"name": "Machine-readable docs (llms.txt)",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 15
},
{
"key": "legible_commit_history",
"name": "Legible commit history",
"detail": "no data",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 40
}
]
},
{
"key": "ai_verify_loop",
"band": "good",
"name": "Verify loop (build / test / typecheck)",
"note": "Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.",
"notes": [
{
"code": "excluded_no_data",
"params": {
"components": [
"demonstrated_agent_practice",
"automated_maintenance"
]
}
},
{
"code": "weights_renormalized",
"params": {}
}
],
"value": 74,
"inputs": {
"has_nix": false,
"has_tests": true,
"lockfiles": [
"Cargo.lock"
],
"has_dockerfile": false,
"typed_language": true,
"bootstrap_files": [
"website/justfile"
],
"has_devcontainer": false,
"has_linter_config": false,
"typecheck_configs": [],
"agent_commit_share": null,
"toolchain_manifests": [],
"dependency_bot_commit_share": null
},
"components": [
{
"key": "one_command_bootstrap",
"name": "One-command bootstrap",
"detail": "website/justfile",
"points": 18,
"status": "met",
"details": [
{
"code": "file_list",
"params": {
"files": "website/justfile"
}
}
],
"max_points": 18
},
{
"key": "automated_tests",
"name": "Automated tests",
"detail": null,
"points": 22,
"status": "met",
"details": [],
"max_points": 22
},
{
"key": "lint_format_config",
"name": "Lint / format config",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 11
},
{
"key": "static_type_checking",
"name": "Static type checking",
"detail": "Rust (statically typed)",
"points": 11,
"status": "met",
"details": [
{
"code": "statically_typed_language",
"params": {
"language": "Rust"
}
}
],
"max_points": 11
},
{
"key": "reproducible_environment",
"name": "Reproducible environment",
"detail": "lockfile",
"points": 10,
"status": "met",
"details": [
{
"code": "file_list",
"params": {
"files": "lockfile"
}
}
],
"max_points": 10
},
{
"key": "demonstrated_agent_practice",
"name": "Demonstrated agent practice",
"detail": "no data",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 10
},
{
"key": "automated_maintenance",
"name": "Automated maintenance",
"detail": "no data",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 8
},
{
"key": "openssf_scorecard_pinned_dependencies",
"name": "OpenSSF Scorecard: Pinned-Dependencies",
"detail": "dependency not pinned by hash detected -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 10
}
]
},
{
"key": "ai_code_legibility",
"band": "excellent",
"name": "Code legibility for models",
"note": null,
"notes": [],
"value": 100,
"inputs": {
"primary_language": "Rust",
"largest_source_bytes": 23603,
"source_files_sampled": 220,
"oversized_source_files": 0
},
"components": [
{
"key": "type_checkable_code",
"name": "Type-checkable code",
"detail": "Rust (statically typed)",
"points": 45,
"status": "met",
"details": [
{
"code": "statically_typed_language",
"params": {
"language": "Rust"
}
}
],
"max_points": 45
},
{
"key": "manageable_file_sizes",
"name": "Manageable file sizes",
"detail": "0/220 source files over 60KB",
"points": 55,
"status": "met",
"details": [
{
"code": "oversized_source_files",
"params": {
"kb": 60,
"sampled": 220,
"oversized": 0
}
}
],
"max_points": 55
}
]
}
],
"description": "How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score."
}
],
"metrics_version": "1.13.0"
},
"warnings": [
"Could not fetch crates package 'exercises' from its registry"
],
"report_type": "repository",
"generated_at": "2026-07-15T20:49:59.123627Z",
"schema_version": "0.11.0",
"badge_url": "https://raw.githubusercontent.com/inspect-software/badges/main/v1/r/rust-lang/rustlings.svg",
"full_name": "rust-lang/rustlings",
"license_state": "standard",
"license_spdx": "MIT"
}Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.
Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v1.13.0, schema v0.11.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — crates.io.