Public record
Software health reportschema 0.30.0 · metrics 2.10.0 · 2026-08-03 04:07 UTC

Marwes / combine

A parser combinator library for Rust

RustMIT★ 1,362 stars⑂ 99 forkssince Jan 2015View on GitHub ↗

Marwes/combine holds a health index of 42 out of 100, placing it in the Weak band. It scores highest on Community & Adoption (72/100) and lowest on Vitality (24/100). It was last updated 180 days ago. A single contributor accounts for most of its recent work.

42
overall / 100
Weak

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.

42
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 50 is calibrated to 50 on the published index scale (record calibration 2026-08-02).

Ownership

Markus WesterlindPersonal account
317 followers160 public repossince Aug 2011

This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
crates.iocombine4.6.717,941,15681844 days agollcombinatorsparsingparserno-std

Metrics by category

Vitality

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

24At Risk · 21% of overall
How it's scored
9.9/36Push recencylast push 180 days ago
1.4/36Commit cadence2/52 weeks with commits
6.3/18Commit volume4 commits in the last year
0/10OpenSSF Scorecard: Maintained0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
Inputs used
commits_last_year4
human_commit_share1
days_since_last_push180
active_weeks_last_year2
How it's scored
16.2/27Ships releases72 version tags (no GitHub releases)
0/36Release recencylatest release 844 days ago
12.6/27Release cadencea release every ~133.5 days
0/10OpenSSF Scorecard: Signed-Releasesno data
Inputs used
releases_count72
latest_release_tagv4.6.7
releases_from_tagsyes
days_since_latest_release844
mean_days_between_releases133.5
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?

72Good · 17% of overall
How it's scored
50.8/60Stars1,362 stars
16.6/25Forks99 forks
6.5/15Watchers16 watchers
Inputs used
forks99
stars1,362
watchers16
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
22.5/22.5Licenserecognized license (MIT)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges1
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_servicestravis-ci.org
has_pull_request_templateno
How it's scored
80/80Monthly downloads17,941,156 downloads/month across crates
0/20Registry dependentsnot reported by this ecosystem
Inputs used
packagescombine
dependents
ecosystemscrates
total_downloads223,876,642
monthly_downloads17,941,156
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?

60Moderate · 23% of overall
How it's scored
9/54Bus factor1 contributor(s) cover half of all commits
2.5/22.5Commit distributiontop contributor authored 89% of commits
13.5/13.5Contributor breadth54 contributors
10/10OpenSSF Scorecard: Contributorsproject has 18 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled54
top_contributor_share0.888
How it's scored
34.1/42Issue resolution81% of issues closed
27.5/30PR acceptance185/202 decided PRs merged
0/13Newcomer PR acceptanceno first-time contributor's PR decided in 30d
4.5/15OpenSSF Scorecard: Code-ReviewFound 6/19 approved changesets -- score normalized to 3
Inputs used
merged_prs185
open_issues31
closed_issues133
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.811
closed_unmerged_prs17
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
10/30Ownership backingpersonal (user) account
0/20Verified domainnot applicable to user accounts
18/25Owner reach317 followers of Marwes
25/25Track record160 public repos, account ~15 yr old
Inputs used
followers317
owner_typeUser
is_verified
owner_loginMarwes
public_repos160
account_age_days5,478
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
How it's scored
25/25Published & resolvable1 package(s) on crates
4/35Publish recencylatest publish 844 days ago
20/20Version history81 published versions
20/20Not deprecatedactive, not deprecated or yanked
Inputs used
packagescombine
ecosystemscrates
any_deprecatedno
min_days_since_publish844

Engineering Quality

Are baseline engineering and documentation practices in place?

60Moderate · 19% of overall
How it's scored
24/24CI workflows1 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
2/20OpenSSF Scorecard: CI-Tests1 out of 9 merged PRs checked by a CI test -- score normalized to 1
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configno
has_precommit_configno
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage sitehttps://docs.rs/combine/*/combine/
10/10Repository description
10/10Topics4 topics
10/10Wiki
Inputs used
topicsrust, parser-combinators, parser, zero-copy
has_wikiyes
homepagehttps://docs.rs/combine/*/combine/
docs_sitehttps://docs.rs/combine/*/combine/
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

31At Risk · 16% of overall
How it's scored
7.5/7.5Binary-Artifactsno binaries found in the repo
0/7.5Branch-Protectionno data
0.2/2.5CI-Tests1 out of 9 merged PRs checked by a CI test -- score normalized to 1
0/2.5CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
2.2/7.5Code-ReviewFound 6/19 approved changesets -- score normalized to 3
2.5/2.5Contributorsproject has 18 contributing companies or organizations
10/10Dangerous-Workflowno dangerous workflow patterns detected
0/7.5Dependency-Update-Toolno update tool detected
0/5Fuzzingproject is not fuzzed
2.5/2.5Licenselicense file detected
0/7.5Maintained0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
0/5Packagingno data
0/5Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0/5SASTSAST tool is not run on all commits -- score normalized to 0
0/5Security-Policysecurity policy file not detected
0/7.5Signed-Releasesno data
0/7.5Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0/7.5Vulnerabilities14 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate2.9
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.
How it's scored
9.6/35Direct dependencies free of known advisories3 affected: tokio 0.2.25 (high 8.1), tokio 0.3.7 (high 8.1), async-std 1.13.2 (unknown)
9.6/25Indirect dependencies free of known advisories5 affected: rustix 0.38.10 (moderate 6.5), atty 0.2.14 (low), net2 0.2.39 (unknown), +2 more
21.1/40No advisories left outstanding8 advisory-carrying package(s) unaddressed past 90 days; oldest published 2,284 days ago
Inputs used
sourceosv
advisories22
affected_packages8
assessed_packages161
unassessed_packages0
affected_by_severityhigh 2, moderate 1, low 1, unknown 4
direct_affected_packages3
Matched the crates:combine@4.6.7 runtime dependency closure — what installing the published package pulls in — 161 packages. 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.

60Moderate · 4% of overall
How it's scored
0/45Agent instructionsno CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
26.7/40Legible commit history50 of 100 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url
legible_history_share0.5
agent_instruction_files
agent_instruction_max_bytes
How it's scored
12.6/18One-command bootstrapCargo.toml (toolchain convention, no task runner)
22/22Automated tests
0/11Lint / format config
11/11Static type checkingRust (statically typed)
10/10Reproducible environmentlockfile
0/10Demonstrated agent practiceno agent-authored commits among the last 100
0/8Automated maintenanceno automated dependency updates observed
0/10OpenSSF Scorecard: Pinned-Dependenciesdependency 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_configno
typecheck_configs
agent_commit_share0
toolchain_manifestsCargo.toml
dependency_bot_commit_share0
How it's scored
45/45Type-checkable codeRust (statically typed)
55/55Manageable file sizes0/38 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes56,318
source_files_sampled38
oversized_source_files0
How it's scored
0/40API schema (OpenAPI/GraphQL/proto)not applicable to this kind of software
0/20MCP servernot applicable to this kind of software
40/40Runnable examplesexamples
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

1,362GitHub stars
54contributors
4commits, last 12 months
180days since last push
72releases
1bus factor
31open 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 ★ / 99 ⇿
0Stars
99Forks
72Releases

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.

0204060801009932015-032020-112026-07
Major 3Minor 20Patch 38

Each point covers 11 days.

OpenSSF Scorecard 2.9 / 10
2.9aggregate

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 · 2026-08-03 04:07 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
1CI-Tests1 out of 9 merged PRs checked by a CI test -- score normalized to 1
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
3Code-ReviewFound 6/19 approved changesets -- score normalized to 3
10Contributorsproject has 18 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
0Dependency-Update-Toolno update tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
0Maintained0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0Vulnerabilities14 existing vulnerabilities detected
Direct dependencies 11
RegistryPackageVersion constraintManifest
crates.ioregex1Cargo.toml
crates.iomemchr2.3Cargo.toml
crates.iopin-project-lite0.2Cargo.toml
crates.iotokio-02-dep0.2.3Cargo.toml
crates.iotokio-03-dep0.3Cargo.toml
crates.iotokio-dep1Cargo.toml
crates.iotokio-util0.7Cargo.toml
crates.iofutures-core-030.3.1Cargo.toml
crates.iofutures-io-030.3.1Cargo.toml
crates.iobytes_050.5Cargo.toml
crates.iobytes1Cargo.toml
All dependencies 179

Full resolved dependency set from the GitHub dependency graph: 8 direct and 171 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.iobytes0.4.12direct
crates.iobytes0.5.6direct
crates.iobytes1.5.0direct
crates.iomemchr2.6.4direct
crates.iopin-project-lite0.1.12direct
crates.iopin-project-lite0.2.13direct
crates.ioregex1.10.2direct
crates.iotokio-util0.7.10direct
crates.ioaddr2line0.21.0indirect
crates.ioadler1.0.2indirect
crates.ioaho-corasick1.1.2indirect
crates.ioasync-channel1.9.0indirect
crates.ioasync-channel2.1.1indirect
crates.ioasync-executor1.8.0indirect
crates.ioasync-global-executor2.4.1indirect
crates.ioasync-io1.13.0indirect
crates.ioasync-io2.2.2indirect
crates.ioasync-lock2.8.0indirect
crates.ioasync-lock3.2.0indirect
crates.ioasync-std1.12.0indirect
crates.ioasync-task4.5.0indirect
crates.ioatomic-waker1.1.2indirect
crates.ioatty0.2.14indirect
crates.ioautocfg1.1.0indirect
crates.iobacktrace0.3.69indirect
crates.iobitflags1.3.2indirect
crates.iobitflags2.4.1indirect
crates.ioblocking1.5.1indirect
crates.iobumpalo3.14.0indirect
crates.iobyteorder1.5.0indirect
crates.iocast0.3.0indirect
crates.iocc1.0.83indirect
crates.iocfg-if0.1.10indirect
crates.iocfg-if1.0.0indirect
crates.ioclap2.34.0indirect
crates.ioconcurrent-queue2.4.0indirect
crates.iocriterion0.3.6indirect
crates.iocriterion-plot0.4.5indirect
crates.iocrossbeam-deque0.8.3indirect
crates.iocrossbeam-epoch0.9.15indirect
crates.iocrossbeam-utils0.8.16indirect
crates.iocsv1.3.0indirect
crates.iocsv-core0.1.11indirect
crates.ioeither1.9.0indirect
crates.ioenv_logger0.5.13indirect
crates.ioerrno0.3.8indirect
crates.ioevent-listener2.5.3indirect
crates.ioevent-listener4.0.0indirect
crates.ioevent-listener-strategy0.4.0indirect
crates.iofastrand1.9.0indirect
crates.iofastrand2.0.1indirect
crates.iofuchsia-cprng0.1.1indirect
crates.iofuchsia-zircon0.3.3indirect
crates.iofuchsia-zircon-sys0.3.3indirect
crates.iofutures0.1.31indirect
crates.iofutures0.3.29indirect
crates.iofutures-channel0.3.29indirect
crates.iofutures-core0.3.29indirect
crates.iofutures-executor0.3.29indirect
crates.iofutures-io0.3.29indirect
crates.iofutures-lite1.13.0indirect
crates.iofutures-lite2.1.0indirect
crates.iofutures-macro0.3.29indirect
crates.iofutures-sink0.3.29indirect
crates.iofutures-task0.3.29indirect
crates.iofutures-util0.3.29indirect
crates.iogimli0.28.1indirect
crates.iogloo-timers0.2.6indirect
crates.iohalf1.8.2indirect
crates.iohermit-abi0.1.19indirect
crates.iohermit-abi0.3.3indirect
crates.iohumantime1.3.0indirect
crates.ioinstant0.1.12indirect
crates.ioio-lifetimes1.0.11indirect
crates.ioiovec0.1.4indirect
crates.ioitertools0.10.5indirect
crates.ioitoa1.0.10indirect
crates.iojs-sys0.3.66indirect
crates.iokernel32-sys0.2.2indirect
crates.iokv-log-macro1.0.7indirect
crates.iolazy_static1.4.0indirect
crates.iolibc0.2.151indirect
crates.iolinux-raw-sys0.3.8indirect
crates.iolinux-raw-sys0.4.12indirect
crates.iolog0.4.20indirect
crates.iomemoffset0.9.0indirect
crates.iominiz_oxide0.7.1indirect
crates.iomio0.6.23indirect
crates.iomiow0.2.2indirect
crates.ionet20.2.39indirect
crates.ionum-traits0.2.17indirect
crates.ionum_cpus1.16.0indirect
crates.ioobject0.32.1indirect
crates.ioonce_cell1.19.0indirect
crates.iooorandom11.1.3indirect
crates.ioparking2.2.0indirect
crates.iopartial-io0.3.1indirect
crates.iopin-utils0.1.0indirect
crates.iopiper0.2.1indirect
crates.ioplotters0.3.5indirect
crates.ioplotters-backend0.3.5indirect
crates.ioplotters-svg0.3.5indirect
crates.iopolling2.8.0indirect
crates.iopolling3.3.1indirect
crates.ioproc-macro21.0.70indirect
crates.ioquick-error1.2.3indirect
crates.ioquickcheck0.6.2indirect
crates.ioquote1.0.33indirect
crates.iorand0.4.6indirect
crates.iorand_core0.3.1indirect
crates.iorand_core0.4.2indirect
crates.iorayon1.8.0indirect
crates.iorayon-core1.12.0indirect
crates.iordrand0.4.0indirect
crates.ioregex-automata0.4.3indirect
crates.ioregex-syntax0.8.2indirect
crates.iorustc-demangle0.1.23indirect
crates.iorustix0.37.27indirect
crates.iorustix0.38.28indirect
crates.ioryu1.0.16indirect
crates.iosame-file1.0.6indirect
crates.ioscopeguard1.2.0indirect
crates.ioserde1.0.193indirect
crates.ioserde_cbor0.11.2indirect
crates.ioserde_derive1.0.193indirect
crates.ioserde_json1.0.108indirect
crates.ioslab0.4.9indirect
crates.iosocket20.4.10indirect
crates.iosyn1.0.109indirect
crates.iosyn2.0.40indirect
crates.iotermcolor1.4.0indirect
crates.iotextwrap0.11.0indirect
crates.iotinytemplate1.2.1indirect
crates.iotokio0.2.25indirect
crates.iotokio0.3.7indirect
crates.iotokio1.35.0indirect
crates.iotokio-io0.1.13indirect
crates.iotokio-macros0.2.6indirect
crates.iotokio-macros0.3.2indirect
crates.iotokio-macros2.2.0indirect
crates.iotracing0.1.40indirect
crates.iotracing-core0.1.32indirect
crates.iounicode-ident1.0.12indirect
crates.iounicode-width0.1.11indirect
crates.iovalue-bag1.4.2indirect
crates.iowaker-fn1.1.1indirect
crates.iowalkdir2.4.0indirect
crates.iowasm-bindgen0.2.89indirect
crates.iowasm-bindgen-backend0.2.89indirect
crates.iowasm-bindgen-futures0.4.39indirect
crates.iowasm-bindgen-macro0.2.89indirect
crates.iowasm-bindgen-macro-support0.2.89indirect
crates.iowasm-bindgen-shared0.2.89indirect
crates.ioweb-sys0.3.66indirect
crates.iowinapi0.2.8indirect
crates.iowinapi0.3.9indirect
crates.iowinapi-build0.1.1indirect
crates.iowinapi-i686-pc-windows-gnu0.4.0indirect
crates.iowinapi-util0.1.6indirect
crates.iowinapi-x86_64-pc-windows-gnu0.4.0indirect
crates.iowindows-sys0.48.0indirect
crates.iowindows-sys0.52.0indirect
crates.iowindows-targets0.48.5indirect
crates.iowindows-targets0.52.0indirect
crates.iowindows_aarch64_gnullvm0.48.5indirect
crates.iowindows_aarch64_gnullvm0.52.0indirect
crates.iowindows_aarch64_msvc0.48.5indirect
crates.iowindows_aarch64_msvc0.52.0indirect
crates.iowindows_i686_gnu0.48.5indirect
crates.iowindows_i686_gnu0.52.0indirect
crates.iowindows_i686_msvc0.48.5indirect
crates.iowindows_i686_msvc0.52.0indirect
crates.iowindows_x86_64_gnu0.48.5indirect
crates.iowindows_x86_64_gnu0.52.0indirect
crates.iowindows_x86_64_gnullvm0.48.5indirect
crates.iowindows_x86_64_gnullvm0.52.0indirect
crates.iowindows_x86_64_msvc0.48.5indirect
crates.iowindows_x86_64_msvc0.52.0indirect
crates.iows2_32-sys0.2.1indirect
Dependency advisories 8

Installing crates:combine@4.6.7 pulls in 161 packages, direct and transitive: 8 carry known advisories, of which 3 are direct dependencies.

PackageVersionRelationSeverityAdvisoriesFixed in
tokio0.2.25directhigh61.44.2
tokio0.3.7directhigh81.44.2
rustix0.38.10indirectmoderate10.38.19
atty0.2.14indirectlow3
async-std1.13.2directunknown1
net20.2.39indirectunknown1
serde_cbor0.11.2indirectunknown1
tokio-io0.1.13indirectunknown1

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 v0.30.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticscrates.io.