Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-11 22:34 UTC

mbj / mutant

Mutation testing for Ruby. AI writes your code. AI writes your tests. But who tests the tests?

RubyCustom license★ 2,189 stars⑂ 163 forkssince Jul 2012View on GitHub ↗
KindCommand-line toolLibraryNetwork servicehow this is determined
#mutation-testing#ruby#coverage#rspec#minitest#code-review#code-quality-analyzer#mutant#static-analysis#dynamic-analysis

mbj/mutant holds a health index of 87 out of 100, placing it in the Excellent band. It scores highest on Vitality (88/100) and lowest on AI Readiness (50/100). It was last updated today. A single contributor accounts for most of its recent work.

87
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.

87
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 73 is calibrated to 87 on the published index scale (record calibration 2026-08-02).

Ownership

Markus SchirpPersonal account
291 followers168 public repossince Aug 2009Schirp DSO LTD

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.iomanagerpoints to another repo — not scored0.1.03122247 days agoartificedatabasepermissions
RubyGemsmutant0.16.3-224134 days ago—
RubyGemsmutant-rspec0.16.3-139134 days ago—
RubyGemsmutant-minitest0.16.3-103134 days ago—

Metrics by category

Vitality

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

88Excellent · 21% of overall

Development activity

86Excellent
How it's scored
36/36Push recency — last push 0 days ago
21.5/36Commit cadence — 31/52 weeks with commits
18/18Commit volume — 312 commits in the last year
10/10OpenSSF Scorecard: Maintained — 21 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year312
human_commit_share0.86
days_since_last_push0
active_weeks_last_year31

Release discipline

90Excellent
How it's scored
27/27Ships releases — 5 releases published
27/36Release recency — latest release 143 days ago
27/27Release cadence — a release every ~14.8 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count5
latest_release_tagv0.16.2
releases_from_tagsno
days_since_latest_release143
mean_days_between_releases14.8
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?

76Good · 17% of overall

Popularity & adoption

81Excellent
How it's scored
54.2/60Stars — 2,189 stars
18.4/25Forks — 163 forks
8.1/15Watchers — 30 watchers
Inputs used
forks163
stars2,189
watchers30
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

64Moderate
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
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges5
has_contributingyes
has_issue_templateno
has_code_of_conductno
readme_badge_servicesgithub.com, shields.io
has_pull_request_templateno

Ecosystem adoption (downloads)

86Excellent
How it's scored
68.6/80Total downloads — 4,032,766 downloads all-time across rubygems
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesmutant, mutant-rspec, mutant-minitest
dependents—
ecosystemsrubygems
total_downloads4,032,766
monthly_downloads—
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

Maintainer resilience (bus factor)

36Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
3.9/22.5Commit distribution — top contributor authored 82% of commits
13.5/13.5Contributor breadth — 55 contributors
10/10OpenSSF Scorecard: Contributors — project has 34 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled55
top_contributor_share0.825

Issue & PR responsiveness

78Good
How it's scored
32.9/42Issue resolution — 78% of issues closed
25.9/30PR acceptance — 961/1,114 decided PRs merged
13/13Newcomer PR acceptance — 1/1 first-time contributors' PRs merged in 30d
6/15OpenSSF Scorecard: Code-Review — Found 3/7 approved changesets -- score normalized to 4
Inputs used
merged_prs961
open_issues116
closed_issues419
prs_merged_7d0
prs_decided_7d0
prs_merged_30d2
prs_decided_30d2
issue_closed_ratio0.783
closed_unmerged_prs153
first_time_authors_30d1
first_time_prs_merged_30d1
first_time_prs_decided_30d1

Ownership & stewardship

66Good
How it's scored
10/30Ownership backing — personal (user) account
0/20Verified domain — not applicable to user accounts
17.7/25Owner reach — 291 followers of mbj
25/25Track record — 168 public repos, account ~17 yr old
Inputs used
followers291
owner_typeUser
is_verified—
owner_loginmbj
public_repos168
account_age_days6,230
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 3 package(s) on rubygems
35/35Publish recency — latest publish 134 days ago
20/20Version history — 224 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesmutant, mutant-rspec, mutant-minitest
ecosystemsrubygems
any_deprecatedno
min_days_since_publish134

Engineering Quality

Are baseline engineering and documentation practices in place?

86Excellent · 19% of overall

Engineering practices

84Excellent
How it's scored
24/24CI workflows — 1 workflow(s)
24/24Tests present
16/16Linter config — .rubocop.yml
0/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 13 out of 13 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno

Documentation

90Excellent
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://www.rubydoc.info/gems/mutant-rspec/0.16.3
10/10Repository description
10/10Topics — 10 topics
0/10Wiki
Inputs used
topicsmutation-testing, ruby, coverage, rspec, minitest, code-review, code-quality-analyzer, mutant, static-analysis, dynamic-analysis
has_wikino
homepage—
docs_sitehttps://www.rubydoc.info/gems/mutant-rspec/0.16.3
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

52Moderate · 16% of overall

Security posture

58Moderate
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 — 13 out of 13 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
3/7.5Code-Review — Found 3/7 approved changesets -- score normalized to 4
2.5/2.5Contributors — project has 34 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.2/2.5License — license file detected
7.5/7.5Maintained — 21 commit(s) and 2 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
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
6.8/7.5Vulnerabilities — 1 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate5.8
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.

Dependency advisories

26At Risk
How it's scored
5/35Direct dependencies free of known advisories — 3 affected: rust-crypto 0.2.36 (critical), tar 0.4.40 (high 8.1), tokio 0.2.25 (high 8.1)
5.4/25Indirect dependencies free of known advisories — 8 affected: crossbeam-utils 0.7.2 (high 8.1), rsa 0.3.0 (moderate 5.9), time 0.1.45 (moderate 6.2), +5 more
16.1/40No advisories left outstanding — 11 advisory-carrying package(s) unaddressed past 90 days; oldest published 3,657 days ago
Inputs used
sourceosv
advisories29
affected_packages11
assessed_packages161
unassessed_packages0
affected_by_severitycritical 1, high 3, moderate 2, low 1, unknown 4
direct_affected_packages3
Matched the crates:manager@0.1.0 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.

50Moderate · 4% of overall

Agent context & guidance

32At Risk
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
32.2/40Legible commit history — 52 of 86 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.605
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

66Good
How it's scored
12.6/18One-command bootstrap — Cargo.toml, manager/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
11/11Lint / format config — .rubocop.yml
0/11Static type checking
10/10Reproducible environment — lockfile
2/10Demonstrated agent practice — 1 of the last 100 commits agent-authored or agent-credited
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, Gemfile.lock
has_dockerfileno
typed_languageno
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configs—
agent_commit_share0.01
toolchain_manifestsCargo.toml, manager/Cargo.toml
dependency_bot_commit_share0.13

Code legibility for models

55Moderate
How it's scored
0/45Type-checkable code — Ruby without a type-check config
55/55Manageable file sizes — 0/498 source files over 60KB
Inputs used
primary_languageRuby
largest_source_bytes45,738
source_files_sampled498
oversized_source_files0

Machine-readable interfaces

40Weak
How it's scored
0/40API schema (OpenAPI/GraphQL/proto)
0/20MCP server
40/40Runnable examples — example
Inputs used
example_dirsexample
has_mcp_signalno
api_schema_files—
interfaces_expected_ofnetwork-service

Key facts

2,189GitHub stars
55contributors
312commits, last 12 months
0days since last push
5releases
1bus factor
116open issues
crates.io, RubyGemspackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • crates package 'manager' points at a different repository (https://github.com/artifice-network/manager); excluded from ecosystem scoring
  • Could not fetch rubygems package 'mutant-test-unit' from its registry

More detail

Star and fork history 0 ★ / 163 ⇿
0Stars
163Forks
5Releases

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.

0408012016020016142013-012019-112026-08
Major 0Minor 2Patch 3

Each point covers 13 days.

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).Scorecard v5.5.0 · 2026-09-11 22:33 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-Tests13 out of 13 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
4Code-ReviewFound 3/7 approved changesets -- score normalized to 4
10Contributorsproject has 34 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
9Licenselicense file detected
10Maintained21 commit(s) and 2 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
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
9Vulnerabilities1 existing vulnerabilities detected
Direct dependencies 18
RegistryPackageVersion constraintManifest
crates.ioclap4.5manager/Cargo.toml
crates.iocmd-proc0.4manager/Cargo.toml
crates.iolog0.4manager/Cargo.toml
crates.ioociman0.3manager/Cargo.toml
crates.iotokio1manager/Cargo.toml
crates.iotoml0.8manager/Cargo.toml
RubyGemsmutant-rspec—quick_start/Gemfile
RubyGemsrspec—quick_start/Gemfile
RubyGemssimplecov—quick_start/Gemfile
RubyGemsdeep-cover—quick_start/Gemfile
RubyGemsrails—rails_example/Gemfile
RubyGemspg—rails_example/Gemfile
RubyGemssqlite3—rails_example/Gemfile
RubyGemspg-ephemeral—rails_example/Gemfile
RubyGemsrspec—rails_example/Gemfile
RubyGemsrspec-rails—rails_example/Gemfile
RubyGemsmutant—rails_example/Gemfile
RubyGemsmutant-rspec—rails_example/Gemfile
All dependencies 178

Full resolved dependency set from the GitHub dependency graph: 25 direct and 153 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.ioclap—direct
crates.ioclap4.5.53direct
crates.iocmd-proc—direct
crates.iocmd-proc0.4.0direct
crates.iolog—direct
crates.iolog0.4.29direct
crates.ioociman—direct
crates.ioociman0.3.2direct
crates.iotokio—direct
crates.iotokio1.50.0direct
crates.iotoml—direct
crates.iotoml0.8.23direct
RubyGemsdeep-cover1.1.0direct
RubyGemsmutant—direct
RubyGemsmutant0.16.3direct
RubyGemsmutant-rspec—direct
RubyGemsmutant-rspec0.16.3direct
RubyGemspg—direct
RubyGemspg-ephemeral—direct
RubyGemsrspec—direct
RubyGemsrspec3.13.2direct
RubyGemsrspec4.0.0.beta1direct
RubyGemsrspec-rails—direct
RubyGemssimplecov1.1.1direct
RubyGemssqlite3—direct
crates.ioanstream0.6.21indirect
crates.ioanstyle1.0.13indirect
crates.ioanstyle-parse0.2.7indirect
crates.ioanstyle-query1.1.5indirect
crates.ioanstyle-wincon3.0.11indirect
crates.ioblock-buffer0.10.4indirect
crates.iobytes1.11.1indirect
crates.iocfg-if1.0.4indirect
crates.ioclap_builder4.5.53indirect
crates.ioclap_derive4.5.49indirect
crates.ioclap_lex0.7.6indirect
crates.iocolorchoice1.0.4indirect
crates.iocpufeatures0.2.17indirect
crates.iocrypto-common0.1.7indirect
crates.iodigest0.10.7indirect
crates.ioequivalent1.0.2indirect
crates.ioerrno0.3.14indirect
crates.iogeneric-array0.14.7indirect
crates.iohashbrown0.16.1indirect
crates.ioheck0.5.0indirect
crates.ioindexmap2.12.1indirect
crates.ioipnet2.12.0indirect
crates.iois_terminal_polyfill1.70.2indirect
crates.ioitoa1.0.17indirect
crates.iolibc0.2.179indirect
crates.iomemchr2.7.6indirect
crates.iomio1.1.1indirect
crates.ionom8.0.0indirect
crates.ioonce_cell_polyfill1.70.2indirect
crates.iopin-project-lite0.2.17indirect
crates.ioproc-macro21.0.104indirect
crates.ioquote1.0.42indirect
crates.iosame-file1.0.6indirect
crates.iosemver1.0.27indirect
crates.ioserde1.0.228indirect
crates.ioserde_core1.0.228indirect
crates.ioserde_derive1.0.228indirect
crates.ioserde_json1.0.148indirect
crates.ioserde_spanned0.6.9indirect
crates.iosha20.10.9indirect
crates.iosignal-hook-registry1.4.8indirect
crates.iostrsim0.11.1indirect
crates.iosyn2.0.112indirect
crates.iothiserror2.0.17indirect
crates.iothiserror-impl2.0.17indirect
crates.iotokio-macros2.6.1indirect
crates.iotoml_datetime0.6.11indirect
crates.iotoml_edit0.22.27indirect
crates.iotoml_write0.1.2indirect
crates.iotypenum1.19.0indirect
crates.iounicode-ident1.0.22indirect
crates.ioutf8parse0.2.2indirect
crates.ioversion_check0.9.5indirect
crates.iowalkdir2.5.0indirect
crates.iowasi0.11.1+wasi-snapshot-preview1indirect
crates.iowinapi-util0.1.11indirect
crates.iowindows-link0.2.1indirect
crates.iowindows-sys0.61.2indirect
crates.iowinnow0.7.14indirect
crates.iozmij1.0.10indirect
RubyGemsadamantium0.2.0indirect
RubyGemsast2.4.3indirect
RubyGemsbackports3.25.3indirect
RubyGemsbigdecimal4.0.1indirect
RubyGemsbinding_of_caller1.0.1indirect
RubyGemscoderay1.1.3indirect
RubyGemsdate3.5.1indirect
RubyGemsdebug_inspector1.2.0indirect
RubyGemsdeep-cover-core1.1.0indirect
RubyGemsdiff-lcs—indirect
RubyGemsdiff-lcs1.6.2indirect
RubyGemsdiff-lcs2.0.0indirect
RubyGemsdrb2.2.3indirect
RubyGemserb6.0.4indirect
RubyGemserb6.0.7indirect
RubyGemshighline3.1.2indirect
RubyGemsice_nine0.11.2indirect
RubyGemsio-console0.8.2indirect
RubyGemsio-console0.9.2indirect
RubyGemsirb—indirect
RubyGemsirb1.17.0indirect
RubyGemsirb1.18.0indirect
RubyGemsjson2.19.3indirect
RubyGemslanguage_server-protocol3.17.0.5indirect
RubyGemslint_roller1.1.0indirect
RubyGemslogger1.7.0indirect
RubyGemsmemoizable0.4.2indirect
RubyGemsmethod_source1.1.0indirect
RubyGemsminitest—indirect
RubyGemsminitest6.0.2indirect
RubyGemsmize0.6.1indirect
RubyGemsmutex_m—indirect
RubyGemsmutex_m0.3.0indirect
RubyGemsparallel1.27.0indirect
RubyGemsparser—indirect
RubyGemsparser3.3.10.2indirect
RubyGemsparser3.3.11.1indirect
RubyGemsparser3.3.12.0indirect
RubyGemspower_assert3.1.0indirect
RubyGemspp0.6.3indirect
RubyGemspp0.6.4indirect
RubyGemsprettyprint0.2.0indirect
RubyGemsprism1.9.0indirect
RubyGemspry0.16.0indirect
RubyGemspsych5.3.1indirect
RubyGemsracc1.8.1indirect
RubyGemsrainbow3.1.1indirect
RubyGemsrbs4.1.3indirect
RubyGemsrdoc7.2.0indirect
RubyGemsrdoc8.0.0indirect
RubyGemsreadline0.0.4indirect
RubyGemsregexp_parser—indirect
RubyGemsregexp_parser2.11.3indirect
RubyGemsregexp_parser2.12.0indirect
RubyGemsreline0.6.3indirect
RubyGemsreline0.7.0indirect
RubyGemsrspec-core—indirect
RubyGemsrspec-core3.13.6indirect
RubyGemsrspec-core4.0.0.beta1indirect
RubyGemsrspec-expectations3.13.5indirect
RubyGemsrspec-expectations4.0.0.beta1indirect
RubyGemsrspec-its—indirect
RubyGemsrspec-its2.0.0indirect
RubyGemsrspec-mocks3.13.7indirect
RubyGemsrspec-mocks3.13.8indirect
RubyGemsrspec-mocks4.0.0.beta1indirect
RubyGemsrspec-support3.13.7indirect
RubyGemsrspec-support4.0.0.beta1indirect
RubyGemsrubocop—indirect
RubyGemsrubocop1.86.0indirect
RubyGemsrubocop-ast1.49.1indirect
RubyGemsruby-progressbar1.13.0indirect
RubyGemssecurerandom—indirect
RubyGemssecurerandom0.4.1indirect
RubyGemssorbet-runtime—indirect
RubyGemssorbet-runtime0.6.13055indirect
RubyGemssorbet-runtime0.6.13198indirect
RubyGemssorbet-runtime0.6.13427indirect
RubyGemsstringio3.2.0indirect
RubyGemssync0.5.0indirect
RubyGemsterm-ansicolor1.11.3indirect
RubyGemsterminal-table4.0.0indirect
RubyGemstest-unit—indirect
RubyGemstest-unit3.7.8indirect
RubyGemsthor1.5.0indirect
RubyGemsthread_safe0.3.6indirect
RubyGemstins1.51.1indirect
RubyGemstsort0.2.0indirect
RubyGemsunicode-display_width3.2.0indirect
RubyGemsunicode-emoji4.2.0indirect
RubyGemsunparser—indirect
RubyGemsunparser0.9.0indirect
RubyGemswith_progress1.0.1indirect
Dependency advisories 11

Installing crates:manager@0.1.0 pulls in 161 packages, direct and transitive: 11 carry known advisories, of which 3 are direct dependencies.

PackageVersionRelationSeverityAdvisoriesFixed in
rust-crypto0.2.36directcritical30.2.37-0
tar0.4.40directhigh50.4.46
tokio0.2.25directhigh61.44.2
crossbeam-utils0.7.2indirecthigh20.8.7
rsa0.3.0indirectmoderate40.9.10
time0.1.45indirectmoderate20.2.23
rand0.7.3indirectlow20.10.1
bincode1.3.3indirectunknown1—
gcc0.3.55indirectunknown1—
net20.2.39indirectunknown1—
rustc-serialize0.3.25indirectunknown2—

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.

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95rubocop/rubocop-rspecCode style checking for RSpec files.Exceptional98infection/infectionPHP Mutation Testing libraryExceptional92scanaislop/aislopCatch and fix the code-quality issues AI coding agents leave behind - dead code, unsafe casts, swallowed errors, duplication, security risks, and more. 50+ deterministic rules across 10 language targets, with CLI, CI, and GitHub Actions. No LLM at runtime. MIT.Excellent97Shopify/rubydexA high-performance static analysis toolkit for RubyExceptional94simplecov-ruby/simplecovCode coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suitesExceptional93duriantaco/skylosOpen source local-first PR scanner that finds dead code, security bugs, secrets, quality regressions, and AI-code mistakes before merge. For first timers refer to https://duriantaco.github.io/skylos/repo-map/Exceptional

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, RubyGems.