dtolnay/cxx
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
For dtolnay/cxx, the reply time has too small a sample to measure (0 pull requests counted; 10 needed). 64% of 14 outside pull requests got no reply within 14 days (20 April to 17 October 2026). It ranks 1,920 of 3,219 overall. It is not ranked for first-time contributors: not enough evidence to show under this lens.
| Rank | 1,920 of 3,219 |
|---|---|
| Score | 47.88 |
| Tier | C |
| Median first reply | — |
| 14-day no-reply share | 64% |
| First-timer rank | Not enough evidence to show under this lens. |
| Ecosystem | Rust |
| Window | 20 April to 17 October 2026 |
Composite
- Rank
- 1,920 of 3,219
- Score
- 47.88
- Tier
- C
- Coverage
- 75% · Ceiling B
- Quadrant
- Crucible
Coordinates: leverage 56.7 (coverage 91%), friction 59.2 (coverage 60%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 38.2 | 25% |
| Criticality | 65.7 | 100% |
| Governance | 50.5 | 100% |
| Rigor | 45.7 | 70% |
| Accessibility | 32.8 | 85% |
The measured parameters
Responsiveness
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days. | Not shown: Insufficient sample size | ||||
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 64.3% | 0.0 | 14 | 20 April to 17 October 2026 | primaryraw/pr_window/dtolnay__cxx.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | Not shown: Insufficient sample size | ||||
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | Not shown: Insufficient sample size | ||||
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 23.9 hours (1 days) | 95.6 | 5 | 19 April to 16 October 2026 | primaryraw/pr_window/dtolnay__cxx.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | 185 | 79.1 | — | — | primaryraw/dependents/dtolnay__cxx.json |
| Monthly DownloadsDownloads from the package registry in a month. | 3.8 million downloads a month | 76.6 | — | — | primaryraw/downloads/crates__cxx.json |
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.4273 | 42.7 | — | — | primaryraw/github_meta/dtolnay__cxx.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 1 | 25.0 | 252 | — | primaryraw/commits_365d/dtolnay__cxx.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | No CLA or sign-off found | 85.0 | — | — | primaryraw/governance/dtolnay__cxx.json |
| Promotion LadderHow openly a contributor can become a maintainer, from closed to verified. | No written path to becoming a maintainer | 40.0 | — | — | primaryraw/governance/dtolnay__cxx.json |
Rigor
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| AI Policy PostureWhether the project has a written policy on AI-assisted contributions. | No written AI policy | 40.0 | — | — | primaryraw/governance/dtolnay__cxx.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 50 | 50.0 | — | — | primaryraw/scorecard/dtolnay__cxx.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | Not shown: Insufficient sample size | ||||
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 85 | 85.0 | 30 | — | primaryraw/actions_runs/dtolnay__cxx.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 16.7% | 33.3 | 6 | — | primaryraw/author_history/dtolnay__cxx.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 1 | 10.0 | — | — | primaryraw/gfi/dtolnay__cxx.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | Not shown: Insufficient sample size | ||||
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 1,920 of 3,219 | 47.88 | C | Rated |
| First-timer | Not enough evidence to show under this lens. | |||
| Career capital | 676 of 798 | 49.37 | C | Rated |
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 2,216 of 3,696 | 47.66 | C | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 37bb2e99d81e08109268e3aa155d39df97587993642134604d8a9118b802042f
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/17.json, under the key dtolnay/cxx.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). dtolnay/cxx. Snapshot 2026-10-17. https://porchlamp.org/projects/dtolnay/cxx/. CC BY 4.0.
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