BurntSushi/memchr
What happens to a stranger's pull request here, in the Porchlamp snapshot of 14 October 2026.
The reply time has too small a sample to measure (0 pull requests counted; 10 needed). 56% of 16 outside pull requests got no reply within 14 days (16 April to 13 October 2026). It ranks 598 of 3,833 overall and 1,287 of 1,968 for first-time contributors.
Rating
- Score: 61.96
- Coverage: 73% · Ceiling B
- Tier: B (capped)
- Quadrant: Sweet Spot
- Ecosystem: crates.io (Rust)
Capped: this tier can go no higher until more of the project's inputs are measured. It reflects how much data there is, not how good the score is.
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 63.8 | 45% |
| Criticality | 73.5 | 100% |
| Governance | 64.2 | 65% |
| Rigor | 76.0 | 70% |
| Accessibility | 22.6 | 85% |
Rank in each lens
| Lens | Standing |
|---|---|
| Balanced | Rank 598 of 3,833 |
| First-timer | Rank 1,287 of 1,968 |
| Career capital | Rank 366 of 823 |
| Senior systems | Rank 110 of 1,206 |
| AI-assisted | Rank 248 of 3,929 |
The measured parameters
| Parameter | Value | Count | Window | What it measures |
|---|---|---|---|---|
| Time to First Response | Not shown: Insufficient sample size | — | — | Median hours from an outside pull request opening to its first substantive human reply. |
| Decision Rate (90d) | Not shown: Insufficient sample size | — | — | Share of outside pull requests that were merged or closed within 90 days. |
| First-timer Merge Rate | 0.8333 | 6 | — | Share of first-time outside authors' decided pull requests that were merged. |
| PR Ghost Rate (14d) | 0.5625 | 16 | 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) | 48.1231 | 6 | 10 April to 7 October 2026 | Hours within which 90% of merged outside pull requests were merged. |
| Dependents | 650 | — | — | Packages in the registry that depend on this project, counted once each. |
| OpenSSF Criticality | 0.4002 | — | — | OpenSSF criticality score from 0 to 1, computed from the project's public activity signals. |
| Monthly Downloads | 129101886 | — | — | 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 | Not shown: Insufficient sample size | — | — | 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 | 61.8182 | 11 | — | How well the project's build and review pipeline defends against bad changes, 0 to 100. |
| AI Policy Posture | REGULATED | — | — | Whether the project has a written policy on AI-assisted contributions. |
| Substantive Review Rate | Not shown: Insufficient sample size | — | — | 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 | 0.1667 | 6 | — | Share of first-time authors whose first pull request merged within 180 days. |
| Newcomer Return Rate | Not shown: Insufficient sample size | — | — | Share of those merged first-time authors who sent a second pull request within 90 days. |
| Developer Experience | 50 | 30 | — | Developer experience, 0 to 100: half CI run time, half setup signals. |
Similar projects
The ranked projects nearest this one in the same ecosystem.
- agentgateway/agentgateway (rank 592)
- rust-lang/hashbrown (rank 593)
- RediSearch/RediSearch (rank 597)
- cloud-hypervisor/cloud-hypervisor (rank 599)
- amber-lang/amber (rank 603)
Evidence
- Snapshot 2026-10-14, data as of 13 October 2026.
- Record hash:
400c2b6f9593a8aa71b73a221936ddbe61a1128efdcc19521eb294f21b6ee96e - The full record is in data/2026-10-14/repos/c7.json, under the key
BurntSushi/memchr. - How every number is measured: Porchlamp methodology.
Is something wrong?
Open an issue about this record and say what looks wrong.