rust-lang/cc-rs
What happens to a stranger's pull request here, in the Porchlamp snapshot of 14 October 2026.
Outside pull requests to cc-rs got a first human reply in a median of 4.9 hours (98 pull requests, 10 April to 7 October 2026); 4% got none within 14 days. It ranks 23 of 3,833 overall and 83 of 1,968 for first-time contributors.
Rating
- Score: 74.26
- Coverage: 100% · Full
- Tier: A
- Quadrant: Sweet Spot
- Ecosystem: crates.io (Rust)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 97.8 | 100% |
| Criticality | 80.6 | 100% |
| Governance | 68.0 | 100% |
| Rigor | 52.1 | 100% |
| Accessibility | 55.0 | 100% |
Rank in each lens
| Lens | Standing |
|---|---|
| Balanced | Rank 23 of 3,833 |
| First-timer | Rank 83 of 1,968 |
| Career capital | Rank 19 of 823 |
| Senior systems | Rank 26 of 1,206 |
| AI-assisted | Rank 91 of 3,929 |
The measured parameters
| Parameter | Value | Count | Window | What it measures |
|---|---|---|---|---|
| Time to First Response | 4.8778 | 98 | 10 April to 7 October 2026 | Median hours from an outside pull request opening to its first substantive human reply. |
| Decision Rate (90d) | 0.9333 | 15 | 10 April to 9 July 2026 | Share of outside pull requests that were merged or closed within 90 days. |
| First-timer Merge Rate | 0.8571 | 14 | — | Share of first-time outside authors' decided pull requests that were merged. |
| PR Ghost Rate (14d) | 0.037 | 81 | 16 April to 13 October 2026 | Share of outside pull requests with no maintainer response, merge or close within 14 days. |
| Time to Merge (p90) | 43.9019 | 162 | 10 April to 7 October 2026 | Hours within which 90% of merged outside pull requests were merged. |
| Dependents | 2188 | — | — | Packages in the registry that depend on this project, counted once each. |
| OpenSSF Criticality | 0.5523 | — | — | OpenSSF criticality score from 0 to 1, computed from the project's public activity signals. |
| Monthly Downloads | 103651632 | — | — | Downloads from the package registry in a month. |
| Legal IP Regime | NONE | — | — | The contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. |
| Elephant Factor | 3 | 149 | — | The fewest organisations that account for half of the last year's commits. |
| Promotion Ladder | AD_HOC | — | — | How openly a contributor can become a maintainer, from closed to verified. |
| Pipeline Defenses | 82.5 | — | — | How well the project's build and review pipeline defends against bad changes, 0 to 100. |
| AI Policy Posture | AD_HOC | — | — | Whether the project has a written policy on AI-assisted contributions. |
| Substantive Review Rate | 0.1895 | 248 | 10 April to 7 October 2026 | Share of decided pull requests that received a substantive review. |
| Newcomer Issue Supply | 0 | — | — | Open, unassigned, up-to-date issues marked for newcomers. |
| Newcomer Conversion | 0.8 | 15 | — | Share of first-time authors whose first pull request merged within 180 days. |
| Newcomer Return Rate | 0.4167 | 12 | — | Share of those merged first-time authors who sent a second pull request within 90 days. |
| Developer Experience | 50 | 25 | — | Developer experience, 0 to 100: half CI run time, half setup signals. |
Similar projects
The ranked projects nearest this one in the same ecosystem.
- rust-lang/libc (rank 8)
- biomejs/biome (rank 19)
- apache/datafusion (rank 29)
- diesel-rs/diesel (rank 34)
- apache/arrow-rs (rank 38)
Evidence
- Snapshot 2026-10-14, data as of 13 October 2026.
- Record hash:
d94cfec60ce87a358ebdf29f13003923fc6d5e779e2371252b456f14b1debb3b - The full record is in data/2026-10-14/repos/73.json, under the key
rust-lang/cc-rs. - How every number is measured: Porchlamp methodology.
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