Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-16 12:44 UTC

winnow-rs / winnow

Making parsing a breeze

RustCustom license★ 953 stars⑂ 91 forkssince Oct 2022View on GitHub ↗

winnow-rs/winnow holds a health index of 91 out of 100, placing it in the Excellent band. It scores highest on Vitality (87/100) and lowest on Sustainability & Governance (67/100). It was last updated today. 2 contributors account for most of its recent work.

91
overall / 100
Excellent

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

91
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

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.

The weighted overall 77 is calibrated to 91 on the published index scale (record calibration 2026-08-02).

Ownership

winnow-rsOrganization
14 followers1 public reposince Jan 2023

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
crates.iowinnow1.0.486,806,25611164 days agoparserparsingstreamingbitparser-combinators

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

87Excellent · 21% of overall
How it's scored
36/36Push recency — last push 0 days ago
22.8/36Commit cadence — 33/52 weeks with commits
18/18Commit volume — 205 commits in the last year
10/10OpenSSF Scorecard: Maintained — 22 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year205
human_commit_share0.87
days_since_last_push0
active_weeks_last_year33
How it's scored
16.2/27Ships releases — 100 version tags (no GitHub releases)
36/36Release recency — latest release 64 days ago
27/27Release cadence — a release every ~44.2 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count100
latest_release_tagv1.0.4
releases_from_tagsyes
days_since_latest_release64
mean_days_between_releases44.2
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?

77Good · 17% of overall
How it's scored
48.3/60Stars — 953 stars
16.3/25Forks — 91 forks
3.9/15Watchers — 6 watchers
Inputs used
forks91
stars953
watchers6
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
16.9/22.5License — license file present, not a recognized license
18/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
6.3/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges4
has_contributingyes
has_issue_templateno
has_code_of_conductno
readme_badge_servicescoveralls.io, github.com, shields.io
has_pull_request_templateyes
How it's scored
80/80Monthly downloads — 86,806,256 downloads/month across crates
0/20Registry dependents — not reported by this ecosystem
Inputs used
packageswinnow
dependents—
ecosystemscrates
total_downloads902,109,225
monthly_downloads86,806,256
unverified_packages_excluded—
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?

67Good · 23% of overall
How it's scored
25.2/54Bus factor — 2 contributor(s) cover half of all commits
12/22.5Commit distribution — top contributor authored 46% of commits
13.5/13.5Contributor breadth — 99 contributors
10/10OpenSSF Scorecard: Contributors — project has 61 contributing companies or organizations
Inputs used
bus_factor2
contributors_sampled99
top_contributor_share0.465
How it's scored
32.3/42Issue resolution — 77% of issues closed
27.2/30PR acceptance — 531/586 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 1/12 approved changesets -- score normalized to 0
Inputs used
merged_prs531
open_issues42
closed_issues140
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.769
closed_unmerged_prs55
first_time_authors_30d0
first_time_prs_merged_30d0
first_time_prs_decided_30d0
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
8.5/25Owner reach — 14 followers of winnow-rs
9.5/25Track record — 1 public repos, account ~3 yr old
Inputs used
followers14
owner_typeOrganization
is_verifiedno
owner_loginwinnow-rs
public_repos1
account_age_days1,330

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on crates
35/35Publish recency — latest publish 64 days ago
20/20Version history — 111 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packageswinnow
ecosystemscrates
any_deprecatedno
min_days_since_publish64

Engineering Quality

Are baseline engineering and documentation practices in place?

78Good · 19% of overall
How it's scored
24/24CI workflows — 7 workflow(s)
24/24Tests present
16/16Linter config — .clippy.toml, Cargo.toml ([lints], [workspace.lints])
9.6/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 14 out of 14 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configyes

Documentation

55Moderate
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — https://docs.rs/winnow
10/10Repository description
0/10Topics
0/10Wiki
Inputs used
topics—
has_wikino
homepagehttps://docs.rs/winnow
docs_sitehttps://docs.rs/winnow
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

76Good · 16% of overall
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
2.5/2.5CI-Tests — 14 out of 14 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 1/12 approved changesets -- score normalized to 0
2.5/2.5Contributors — project has 61 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
5/5Fuzzing — project is fuzzed
2.2/2.5License — license file detected
7.5/7.5Maintained — 22 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
5/5SAST — SAST tool is run on all commits
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
7.5/7.5Token-Permissions — GitHub workflow tokens follow principle of least privilege
2.2/7.5Vulnerabilities — 7 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate7
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
0/25Indirect dependencies free of known advisories — transitive set not separable from development and test dependencies in this scope
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories9
affected_packages5
assessed_packages167
unassessed_packages1
affected_by_severityhigh 1, low 2, unknown 2
direct_affected_packages0
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 167 resolved dependencies against OSV. 1 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list. This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. Reachability is not analyzed.

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

72Good · 4% of overall
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 86 of 87 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.989
agent_instruction_files—
agent_instruction_max_bytes—
How it's scored
12.6/18One-command bootstrap — Cargo.toml, fuzz/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
11/11Lint / format config — .clippy.toml, Cargo.toml ([lints], [workspace.lints])
11/11Static type checking — Rust (statically typed)
10/10Reproducible environment — lockfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 13 of the last 100 commits are automated dependency updates
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfilesCargo.lock
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configs—
agent_commit_share0
toolchain_manifestsCargo.toml, fuzz/Cargo.toml
dependency_bot_commit_share0.13
How it's scored
45/45Type-checkable code — Rust (statically typed)
52.6/55Manageable file sizes — 5/115 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes89,152
source_files_sampled115
oversized_source_files5
How it's scored
0/40API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software
0/20MCP server — not applicable to this kind of software
40/40Runnable examples — examples
Inputs used
example_dirsexamples
has_mcp_signalno
api_schema_files—
interfaces_expected_of—
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.

Key facts

953GitHub stars
99contributors
205commits, last 12 months
0days since last push
100releases
2bus factor
42open 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 ★ / 91 ⇿
0Stars
91Forks
100Releases

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.

0204060801009132023-012024-112026-09
Major 1Minor 3Patch 96

Each point covers 4 days.

OpenSSF Scorecard 7.0 / 10
7.0aggregate

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).Scorecard v5.5.0 · 2026-09-16 12:43 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md
10CI-Tests14 out of 14 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 1/12 approved changesets -- score normalized to 0
10Contributorsproject has 61 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
10Fuzzingproject is fuzzed
9Licenselicense file detected
10Maintained22 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
10SASTSAST tool is run on all commits
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
10Token-PermissionsGitHub workflow tokens follow principle of least privilege
3Vulnerabilities7 existing vulnerabilities detected
Direct dependencies 5
RegistryPackageVersion constraintManifest
crates.ioanstream0.6.15Cargo.toml
crates.ioanstyle1.0.8Cargo.toml
crates.iois_terminal_polyfill1.48.1Cargo.toml
crates.iomemchr2.7Cargo.toml
crates.ioterminal_size0.4.3Cargo.toml
All dependencies 168

Full resolved dependency set from the GitHub dependency graph: 5 direct and 163 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.ioanstream0.6.15direct
crates.ioanstyle1.0.8direct
crates.iois_terminal_polyfill1.48.1direct
crates.iomemchr2.7.6direct
crates.ioterminal_size0.4.3direct
crates.ioaho-corasick1.1.3indirect
crates.ioanes0.1.6indirect
crates.ioannotate-snippets0.11.4indirect
crates.ioanstyle-parse0.2.5indirect
crates.ioanstyle-query1.1.1indirect
crates.ioanstyle-wincon3.0.4indirect
crates.ioanyhow1.0.100indirect
crates.ioarbitrary1.4.2indirect
crates.ioatty0.2.14indirect
crates.ioautocfg1.5.0indirect
crates.ioautomod1.0.15indirect
crates.iobit-set0.8.0indirect
crates.iobit-vec0.8.0indirect
crates.iobitflags2.9.4indirect
crates.ioblock-buffer0.10.4indirect
crates.iobumpalo3.14.0indirect
crates.iobytecount0.6.9indirect
crates.iocast0.3.0indirect
crates.iocc1.2.39indirect
crates.iocfg-if1.0.3indirect
crates.iociborium0.2.2indirect
crates.iociborium-io0.2.2indirect
crates.iociborium-ll0.2.2indirect
crates.iocircular0.3.0indirect
crates.ioclap4.3.24indirect
crates.ioclap_builder4.3.24indirect
crates.ioclap_lex0.5.0indirect
crates.iocolorchoice1.0.2indirect
crates.iocpufeatures0.2.17indirect
crates.iocriterion0.5.1indirect
crates.iocriterion-plot0.5.0indirect
crates.iocrossbeam-deque0.8.6indirect
crates.iocrossbeam-epoch0.9.18indirect
crates.iocrossbeam-utils0.8.21indirect
crates.iocrunchy0.2.4indirect
crates.iocrypto-common0.1.6indirect
crates.iodiff0.1.13indirect
crates.iodigest0.10.7indirect
crates.ioeither1.15.0indirect
crates.ioerrno0.3.14indirect
crates.ioescargot0.5.14indirect
crates.iofastrand2.3.0indirect
crates.iofind-msvc-tools0.1.2indirect
crates.iofnv1.0.7indirect
crates.iogeneric-array0.14.7indirect
crates.iogetrandom0.2.16indirect
crates.iogetrandom0.3.3indirect
crates.iohalf2.2.1indirect
crates.iohandlebars4.5.0indirect
crates.iohermit-abi0.1.19indirect
crates.iohermit-abi0.5.2indirect
crates.iois-terminal0.4.16indirect
crates.ioitertools0.10.5indirect
crates.ioitoa1.0.15indirect
crates.iojobserver0.1.34indirect
crates.iojs-sys0.3.81indirect
crates.iolazy_static1.5.0indirect
crates.iolexopt0.3.1indirect
crates.iolibc0.2.176indirect
crates.iolibfuzzer-sys—indirect
crates.iolibfuzzer-sys0.4.10indirect
crates.iolinux-raw-sys0.11.0indirect
crates.iolog0.4.28indirect
crates.ionormalize-line-endings0.3.0indirect
crates.ionum-traits0.2.19indirect
crates.ioonce_cell1.21.3indirect
crates.iooorandom11.1.5indirect
crates.ioos_pipe1.2.2indirect
crates.iopest2.8.0indirect
crates.iopest_derive2.8.0indirect
crates.iopest_generator2.8.0indirect
crates.iopest_meta2.8.0indirect
crates.ioplotters0.3.7indirect
crates.ioplotters-backend0.3.7indirect
crates.ioplotters-svg0.3.7indirect
crates.ioppv-lite860.2.21indirect
crates.iopretty_assertions1.4.1indirect
crates.ioproc-macro21.0.101indirect
crates.ioproptest1.6.0indirect
crates.ioquick-error1.2.3indirect
crates.ioquick-xml0.23.1indirect
crates.ioquote1.0.41indirect
crates.ior-efi5.3.0indirect
crates.iorand0.8.5indirect
crates.iorand_chacha0.3.1indirect
crates.iorand_core0.6.4indirect
crates.iorand_xorshift0.3.0indirect
crates.iorayon1.10.0indirect
crates.iorayon-core1.12.1indirect
crates.ioregex1.11.3indirect
crates.ioregex-automata0.4.11indirect
crates.ioregex-syntax0.8.6indirect
crates.iorustc-hash2.1.1indirect
crates.iorustix1.1.2indirect
crates.iorustversion1.0.22indirect
crates.iorusty-fork0.3.0indirect
crates.ioryu1.0.20indirect
crates.iosame-file1.0.6indirect
crates.ioserde1.0.228indirect
crates.ioserde_core1.0.228indirect
crates.ioserde_derive1.0.228indirect
crates.ioserde_json1.0.145indirect
crates.iosha20.10.9indirect
crates.ioshlex1.3.0indirect
crates.iosimilar2.7.0indirect
crates.iosnapbox0.6.21indirect
crates.iosnapbox-macros0.3.10indirect
crates.iosyn2.0.106indirect
crates.iotempfile3.23.0indirect
crates.ioterm-transcript0.2.0indirect
crates.iotermcolor1.4.1indirect
crates.iothiserror1.0.69indirect
crates.iothiserror2.0.17indirect
crates.iothiserror-impl1.0.69indirect
crates.iothiserror-impl2.0.17indirect
crates.iotinytemplate1.2.1indirect
crates.iotypenum1.18.0indirect
crates.ioucd-trie0.1.7indirect
crates.iounarray0.1.4indirect
crates.iounicode-ident1.0.19indirect
crates.iounicode-width0.1.13indirect
crates.ioutf8parse0.2.2indirect
crates.ioversion_check0.9.5indirect
crates.iowait-timeout0.2.1indirect
crates.iowalkdir2.5.0indirect
crates.iowasi0.11.1+wasi-snapshot-preview1indirect
crates.iowasi0.14.4+wasi-0.2.4indirect
crates.iowasm-bindgen0.2.104indirect
crates.iowasm-bindgen-backend0.2.104indirect
crates.iowasm-bindgen-macro0.2.104indirect
crates.iowasm-bindgen-macro-support0.2.104indirect
crates.iowasm-bindgen-shared0.2.104indirect
crates.ioweb-sys0.3.81indirect
crates.iowinapi0.3.9indirect
crates.iowinapi-i686-pc-windows-gnu0.4.0indirect
crates.iowinapi-util0.1.11indirect
crates.iowinapi-x86_64-pc-windows-gnu0.4.0indirect
crates.iowindows-link0.2.0indirect
crates.iowindows-sys0.52.0indirect
crates.iowindows-sys0.59.0indirect
crates.iowindows-sys0.60.2indirect
crates.iowindows-targets0.52.6indirect
crates.iowindows-targets0.53.4indirect
crates.iowindows_aarch64_gnullvm0.52.6indirect
crates.iowindows_aarch64_gnullvm0.53.0indirect
crates.iowindows_aarch64_msvc0.52.6indirect
crates.iowindows_aarch64_msvc0.53.0indirect
crates.iowindows_i686_gnu0.52.6indirect
crates.iowindows_i686_gnu0.53.0indirect
crates.iowindows_i686_gnullvm0.52.6indirect
crates.iowindows_i686_gnullvm0.53.0indirect
crates.iowindows_i686_msvc0.52.6indirect
crates.iowindows_i686_msvc0.53.0indirect
crates.iowindows_x86_64_gnu0.52.6indirect
crates.iowindows_x86_64_gnu0.53.0indirect
crates.iowindows_x86_64_gnullvm0.52.6indirect
crates.iowindows_x86_64_gnullvm0.53.0indirect
crates.iowindows_x86_64_msvc0.52.6indirect
crates.iowindows_x86_64_msvc0.53.0indirect
crates.iowit-bindgen0.45.1indirect
crates.ioyansi1.0.1indirect
crates.iozerocopy0.8.27indirect
crates.iozerocopy-derive0.8.27indirect
Dependency advisories 5

This repository publishes no package the index resolves, so its own dependency graph was assessed — 167 packages, which also include development and test pins that never ship: 5 carry known advisories, of which 0 are direct. 1 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list.

PackageVersionRelationSeverityAdvisoriesFixed in
quick-xml0.23.1indirecthigh20.41.0
atty0.2.14indirectlow3—
rand0.8.5indirectlow20.10.1
anyhow1.0.100indirectunknown11.0.103
crossbeam-epoch0.9.18indirectunknown10.9.20

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

Feedback

Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.

The message is kept through sign-in.

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 v2.10.0, schema v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — crates.io.