Public recordAt risk
Software health reportschema 0.27.0 · metrics 1.13.0 · 2026-07-22 23:50 UTC
dtolnay / itoa
Fast function for printing integer primitives to a decimal string
dtolnay/itoa holds a health index of 32 out of 100, placing it in the At risk band. It scores highest on Community & Adoption (74/100) and lowest on Security (41/100). It was last updated 28 days ago. A single contributor accounts for most of its recent work.
32
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.
32
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.
High-Risk Jurisdiction Policy applies a 50% multiplier to weighted overall health and gives it an At risk ceiling of 49.
Ownership
David TolnayPersonal account
9,482 followers121 public repossince Jul 20120xF9BA143B95FF6D82
This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish | Tags |
|---|---|---|---|---|---|---|
| crates.io | itoa | 1.0.18 | 85,355,301 | 37 | 124 days ago | integerno-stdvalue-formatting |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
66
Development activity
56Moderate
How it's scored
| 28.8/36 | Push recency — last push 28 days ago |
| 9.7/36 | Commit cadence — 14/52 weeks with commits |
| 16/18 | Commit volume — 59 commits in the last year |
| 1/10 | OpenSSF Scorecard: Maintained — 2 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 1 |
Inputs used
| commits_last_year | 59 |
| human_commit_share | 1 |
| days_since_last_push | 28 |
| active_weeks_last_year | 14 |
Release discipline
82Good
How it's scored
| 27/27 | Ships releases — 37 releases published |
| 27/36 | Release recency — latest release 124 days ago |
| 19.8/27 | Release cadence — a release every ~108.7 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 37 |
| latest_release_tag | 1.0.18 |
| releases_from_tags | no |
| days_since_latest_release | 124 |
| mean_days_between_releases | 108.7 |
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?
74
Popularity & adoption
59Moderate
How it's scored
| 41.8/60 | Stars — 379 stars |
| 13.8/25 | Forks — 46 forks |
| 3.3/15 | Watchers — 5 watchers |
Inputs used
| forks | 46 |
| stars | 379 |
| watchers | 5 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
73Good
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (Apache-2.0) |
| 0/18 | CONTRIBUTING guide |
| 13.5/13.5 | Code of conduct |
| 7.2/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| has_contributing | no |
| has_issue_template | yes |
| has_code_of_conduct | yes |
| has_pull_request_template | no |
Ecosystem adoption (downloads)
100Excellent
How it's scored
| 80/80 | Monthly downloads — 85,355,301 downloads/month across crates |
| 0/20 | Registry dependents — not reported by this ecosystem |
Inputs used
| packages | itoa |
| dependents | — |
| ecosystems | crates |
| total_downloads | 1,130,070,068 |
| monthly_downloads | 85,355,301 |
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?
68
Maintainer resilience (bus factor)
34At risk
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 1.7/22.5 | Commit distribution — top contributor authored 92% of commits |
| 13.5/13.5 | Contributor breadth — 14 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 7 contributing companies or organizations |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 14 |
| top_contributor_share | 0.924 |
How it's scored
| 45/46.8 | Issue resolution — 96% of issues closed |
| 28.2/38.3 | PR acceptance — 31/42 decided PRs merged |
| 1.5/15 | OpenSSF Scorecard: Code-Review — Found 2/15 approved changesets -- score normalized to 1 |
Inputs used
| merged_prs | 31 |
| open_issues | 1 |
| closed_issues | 25 |
| issue_closed_ratio | 0.962 |
| closed_unmerged_prs | 11 |
Ownership & stewardship
75Good
How it's scored
| 10/30 | Ownership backing — personal (user) account |
| 0/20 | Verified domain — not applicable to user accounts |
| 25/25 | Owner reach — 9,482 followers of dtolnay |
| 25/25 | Track record — 121 public repos, account ~14 yr old |
Inputs used
| followers | 9,482 |
| owner_type | User |
| is_verified | — |
| owner_login | dtolnay |
| public_repos | 121 |
| account_age_days | 5,126 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Package maintenance
100Excellent
How it's scored
| 25/25 | Published & resolvable — 1 package(s) on crates |
| 35/35 | Publish recency — latest publish 124 days ago |
| 20/20 | Version history — 37 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | itoa |
| ecosystems | crates |
| any_deprecated | no |
| min_days_since_publish | 124 |
Engineering Quality
Are baseline engineering and documentation practices in place?
61
Engineering practices
68Moderate
How it's scored
| 24/24 | CI workflows — 1 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 20/20 | OpenSSF Scorecard: CI-Tests — 3 out of 3 merged PRs checked by a CI test -- score normalized to 10 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
50Moderate
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 0/15 | Documentation / homepage site |
| 10/10 | Repository description |
| 10/10 | Topics — 2 topics |
| 0/10 | Wiki |
Inputs used
| topics | rust, performance |
| has_wiki | no |
| homepage | — |
| 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?
41
Security posture
26Critical
Jurisdiction risk alert
High-risk jurisdiction exposure detected
1 top contributor profilesRussiaSecurity and overall rating: At risk ceiling
Based on self-published public profile locations. This governance signal does not determine nationality, citizenship, intent, sanctions status, or individual trustworthiness.
How jurisdiction exposure is assessedHow 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 |
| 2.5/2.5 | CI-Tests — 3 out of 3 merged PRs checked by a CI test -- score normalized to 10 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 0.8/7.5 | Code-Review — Found 2/15 approved changesets -- score normalized to 1 |
| 2.5/2.5 | Contributors — project has 7 contributing companies or organizations |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 0/7.5 | Dependency-Update-Tool — no update tool detected |
| 5/5 | Fuzzing — project is fuzzed |
| 2.5/2.5 | License — license file detected |
| 0.8/7.5 | Maintained — 2 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 1 |
| 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 |
| 1.5/5 | Security-Policy — security policy file detected |
| 0/7.5 | Signed-Releases — no data |
| 7.5/7.5 | Token-Permissions — GitHub workflow tokens follow principle of least privilege |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 16 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 2 |
| scorecard_aggregate | 5.2 |
| high_risk_jurisdiction_cap | 49 |
| high_risk_jurisdiction_multiplier | 50 |
| security_posture_after_multiplier | 26 |
| security_posture_before_jurisdiction | 52 |
Excluded from scoring (no data or not applicable): packaging, signed_releases. Remaining weights renormalized. High-Risk Jurisdiction Policy applies a 50% multiplier and gives Security posture an At risk ceiling of 49.
Dependency advisories
100Excellent
How it's scored
| 35/35 | Direct dependencies free of known advisories — no direct dependency carries a known advisory |
| 25/25 | Indirect dependencies free of known advisories — no indirect dependency carries a known advisory |
| 0/40 | No advisories left outstanding — no advisory carries a publication date |
Inputs used
| source | osv |
| advisories | 0 |
| affected_packages | 0 |
| assessed_packages | 48 |
| unassessed_packages | 0 |
| affected_by_severity | none |
| direct_affected_packages | 0 |
Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the crates:itoa@1.0.18 runtime dependency closure — what installing the published package pulls in — 48 packages. Reachability is not analyzed.
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.
46
Agent context & guidance
18Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 17.6/40 | Legible commit history — 33 of 100 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| legible_history_share | 0.33 |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
How it's scored
| 12.6/18 | One-command bootstrap — Cargo.toml, fuzz/Cargo.toml (toolchain convention, no task runner) |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Rust (statically typed) |
| 0/10 | Reproducible environment |
| 0/10 | Demonstrated agent practice — no agent-authored commits among the last 100 |
| 0/8 | Automated maintenance — no automated dependency updates observed |
| 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 | — |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | 0 |
| toolchain_manifests | Cargo.toml, fuzz/Cargo.toml |
| dependency_bot_commit_share | 0 |
Code legibility for models
100Excellent
How it's scored
| 45/45 | Type-checkable code — Rust (statically typed) |
| 55/55 | Manageable file sizes — 0/5 source files over 60KB |
Inputs used
| primary_language | Rust |
| largest_source_bytes | 16,904 |
| source_files_sampled | 5 |
| oversized_source_files | 0 |
Key facts
379GitHub stars
14contributors
59commits, last 12 months
28days since last push
37releases
1bus factor
1open issues
crates.iopackage ecosystems
Data collection warnings
- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
More detail
Star and fork history 0 ★ / 46 ⇿
0Stars
46Forks
35Releases
When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.
Major 1Minor 3Patch 31
Each point covers 10 days.
OpenSSF Scorecard 5.2 / 10
5.2aggregate
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 |
| 10 | CI-Tests | 3 out of 3 merged PRs checked by a CI test -- score normalized to 10 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 1 | Code-Review | Found 2/15 approved changesets -- score normalized to 1 |
| 10 | Contributors | project has 7 contributing companies or organizations |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 0 | Dependency-Update-Tool | no update tool detected |
| 10 | Fuzzing | project is fuzzed |
| 10 | License | license file detected |
| 1 | Maintained | 2 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 1 |
| 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 |
| 3 | Security-Policy | security policy file detected |
| n/a | Signed-Releases | no releases found |
| 10 | Token-Permissions | GitHub workflow tokens follow principle of least privilege |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
Direct dependencies 1
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| crates.io | no-panic | 0.1 | Cargo.toml |
All dependencies 4
Full resolved dependency set from the GitHub dependency graph: 1 direct and 3 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| crates.io | no-panic | — | direct |
| crates.io | arbitrary | — | indirect |
| crates.io | criterion | — | indirect |
| crates.io | libfuzzer-sys | — | indirect |
Dependency advisories 0
Installing crates:itoa@1.0.18 pulls in 48 packages, direct and transitive: 0 carry known advisories, of which 0 are direct dependencies.
No known advisories affect the assessed dependencies.
An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.
Raw JSON report machine-readable
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"body": " warning: casts from `u8` to `u32` can be expressed infallibly using `From`\n --> src/lib.rs:278:52\n |\n 278 | let (pair1, pair2) = divmod100(quad as u32);\n | ^^^^^^^^^^^\n ...\n 322 | impl_Unsigned!(u\n[…]\n.github.io/rust-clippy/master/index.html#cast_lossless\n help: use `u64::from` instead\n |\n 378 - remain = last as u64;\n 378 + remain = u64::from(last);\n |",
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"body": " warning: adding items after statements is confusing, since items exist from the start of the scope\n --> src/lib.rs:472:5\n |\n 472 | const M_HIGH: u128 = 76624777043294442917917351357515459181;\n | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n |\n[…]\n const SH_POST: u8 = 51;\n | ^^^^^^^^^^^^^^^^^^^^^^^\n |\n = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#items_after_statements",
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"body": " warning: this operation has no effect\n --> src/lib.rs:382:17\n |\n 382 | buf[offset + 0].write(DECIMAL_PAIRS[pair1 * 2 + 0]);\n | ^^^^^^^^^^ help: consider reducing it to: `offset`\n |\n = help: for further information visit https://rus\n[…]\n ^^^^^^^^^^^^^ help: consider reducing it to: `(pair2 * 2)`\n |\n = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op",
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"body": " error[E0658]: use of unstable library feature 'slice_first_last_chunk'\n --> src/lib.rs:160:46\n |\n 160 | let (prefix, unsigned) = buf.split_last_chunk_mut().unwrap();\n | ^^^^^^^^^^^^^^^^^^^^\n ...\n 173 | impl\n[…]\n fn fmt(self, buf: &mut Self::Buffer) -> usize;\n | ^^^\n = note: this error originates in the macro `impl_Integer` (in Nightly builds, run with -Z macro-backtrace for more info)",
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"body": " error[E0425]: cannot find function `size_of` in this scope\n --> src/lib.rs:246:23\n |\n 246 | while size_of::<Self>() > 1\n | ^^^^^^^ not found in this scope\n ...\n 325 | impl_Unsigned!(u8);\n | ------------------ in this macro\n[…]\n originates in the macro `impl_Unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)\n help: consider importing this function\n |\n 45 + use core::mem::size_of;\n |",
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"body": " error[E0658]: use of unstable library feature 'hint_assert_unchecked'\n --> src/lib.rs:254:30\n |\n 254 | unsafe { core::hint::assert_unchecked(offset >= 4) }\n | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n ...\n 313 | impl_Unsigned!(u8)\n[…]\n_assert_unchecked'\n --> src/lib.rs:392:22\n |\n 392 | unsafe { core::hint::assert_unchecked(offset <= buf.len()) }\n | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^",
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"body": " error[E0658]: use of unstable library feature `maybe_uninit_slice`\n --> src/lib.rs:227:47\n |\n 227 | unsafe { str::from_utf8_unchecked(written.assume_init_ref()) }\n | ^^^^^^^^^^^^^^^",
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"body": " warning: casts from `u64` to `u128` can be expressed infallibly using `From`\n --> src/udiv128.rs:14:18\n |\n 14 | let carry = (x_lo as u128 * y_lo as u128) >> 64;\n | ^^^^^^^^^^^^\n |\n = help: an `as` cast can become silently lossy if the types ch\n[…]\nlow(clippy::cast_lossless)]`\n help: use `u64::from` instead\n |\n 18 - test_u64_half(u32::MAX as u64, \"4294967295\")\n 18 + test_u64_half(u64::from(u32::MAX), \"4294967295\")\n |",
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"body": " warning: borrow as raw pointer\n --> src/lib.rs:99:19\n |\n 99 | &mut *(&mut self.bytes as *mut [MaybeUninit<u8>; i128::MAX_STR_LEN])\n | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `core::ptr::addr_of_mut!(self.bytes)`\n\n[…]\nclippy/master/index.html#borrow_as_ptr\n = note: `-W clippy::borrow-as-ptr` implied by `-W clippy::pedantic`\n = help: to override `-W clippy::pedantic` add `#[allow(clippy::borrow_as_ptr)]`",
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"body": " warning: usage of a legacy numeric method\n --> benches/bench.rs:47:20\n |\n 47 | bench_u64_half(u32::max_value() as u64)\n | ^^^^^^^^^^^^^^^^\n |\n = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#le\n[…]\ntant instead\n |\n 29 - test_i128_max(i128::max_value(), \"170141183460469231731687303715884105727\")\n 29 + test_i128_max(i128::MAX, \"170141183460469231731687303715884105727\")\n |",
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"body": " warning: `as` casting between raw pointers without changing their constness\n --> src/lib.rs:99:19\n |\n 99 | &mut *(&mut self.bytes as *mut [MaybeUninit<u8>; i128::MAX_STR_LEN]\n | ___________________^\n 100 | | as *mut <I as private::Sealed>\n[…]\ntps://rust-lang.github.io/rust-clippy/master/index.html#ptr_as_ptr\n = note: this warning originates in the macro `impl_Integer128` (in Nightly builds, run with -Z macro-backtrace for more info)",
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}
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{
"key": "pr_acceptance",
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},
{
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{
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"points": 0,
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{
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{
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"key": "package_maintenance",
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{
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{
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],
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},
{
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"metrics": [
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{
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{
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{
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{
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{
"key": "dependency_update_tool",
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{
"key": "fuzzing",
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{
"key": "license",
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"points": 2.5,
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{
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{
"key": "packaging",
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"code": "no_data",
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{
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{
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{
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{
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{
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{
"key": "vulnerabilities",
"name": "Vulnerabilities",
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]
},
{
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"name": "Dependency advisories",
"note": "Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the crates:itoa@1.0.18 runtime dependency closure — what installing the published package pulls in — 48 packages. Reachability is not analyzed.",
"notes": [
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{
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{
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{
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"license_state": "standard",
"license_spdx": "Apache-2.0"
}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 v0.27.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — crates.io.