dtolnay/syn
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
For dtolnay/syn, the reply time and the share with no reply within 14 days both have too small a sample to measure (0 and 4 pull requests counted; 10 needed). It ranks 815 of 3,219 overall. For first-time contributors it ranks 1,021 of 1,525 (the bottom 34%).
| Rank | 815 of 3,219 |
|---|---|
| Score | 56.90 |
| Tier | B (capped) |
| Median first reply | — |
| 14-day no-reply share | — |
| First-timer rank | 1,021 of 1,525 |
| Ecosystem | Rust |
| Window | — |
Composite
- Rank
- 815 of 3,219
- Score
- 56.90
- Tier
- B (capped)
- Coverage
- 76% · Ceiling B
- Quadrant
- Crucible
Coordinates: leverage 64.7 (coverage 91%), friction 50.5 (coverage 60%)
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 | 50.0 | 20% |
| Criticality | 81.7 | 100% |
| Governance | 50.5 | 100% |
| Rigor | 45.7 | 70% |
| Accessibility | 46.8 | 100% |
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. | Not shown: Insufficient sample size | ||||
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 40.0% | 50.0 | 5 | — | primaryraw/author_history/dtolnay__syn.json |
| 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. | Not shown: Insufficient sample size | ||||
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | 8,692 | 96.9 | — | — | primaryraw/dependents/dtolnay__syn.json |
| Monthly DownloadsDownloads from the package registry in a month. | 224.1 million downloads a month | 99.6 | — | — | primaryraw/downloads/crates__syn.json |
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.5154 | 51.5 | — | — | primaryraw/github_meta/dtolnay__syn.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 | 380 | — | primaryraw/commits_365d/dtolnay__syn.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__syn.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__syn.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__syn.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 50 | 50.0 | — | — | primaryraw/scorecard/dtolnay__syn.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. | 50 | 50.0 | 30 | — | primaryraw/actions_runs/dtolnay__syn.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 50.0% | 100.0 | 14 | — | primaryraw/author_history/dtolnay__syn.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/dtolnay__syn.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | 14.3% | 28.6 | 7 | — | primaryraw/author_history/dtolnay__syn.json |
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 815 of 3,219 | 56.90 | B (capped) | Rated |
| First-timer | 1,021 of 1,525 | 51.85 | C | Rated |
| Career capital | 337 of 798 | 60.10 | B | Rated |
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 1,236 of 3,696 | 54.59 | C | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 0ac1e4268808ae9dffedd3b5098c709e717d2ee4012a63616e1c4cc64d778941
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/80.json, under the key dtolnay/syn.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). dtolnay/syn. Snapshot 2026-10-17. https://porchlamp.org/projects/dtolnay/syn/. CC BY 4.0.
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