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ouroboros

v0.18.5 Growing

Easy, safe self-referential struct generation.

MIT OR Apache-2.0 Edition 2018

Quick Verdict

  • โœ•Not updated for 1+ year
  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (2.3K crates depend on it)
  • โœ“Tiny footprint (12KB, 3 deps)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
60.2M
Dependents
2.3K
Releases
50
Size
12KB

Deep Insights

๐Ÿ“Š
Stable downloads

3.5M downloads in the last 30 days (116.9K/day). Volume is roughly flat compared to the previous period.

๐Ÿ”—
Widely adopted

2.3K crates depend on ouroboros. Strong ecosystem adoption means battle-tested code and long-term stability.

โš ๏ธ
Single maintainer risk

ouroboros has only 1 owner despite 2.3K dependents. This is a bus-factor concern โ€” consider the implications for long-term support.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 5+ years old, ouroboros hasn't reached 1.0 yet. Expect potential API changes between versions.

๐Ÿชถ
Minimal dependencies

Only 3 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

๐Ÿ“
Compact crate

At 11KB, ouroboros is lightweight. Small crate size correlates with focused, well-scoped functionality.

โš ๏ธ
Notable yanked versions

22% of releases have been yanked. Check version history before pinning.

๐ŸŒŸ
Used by top crates

Notable dependents include sea-orm, opendal, mailparse, pingora-core, cynic-codegen. When high-quality crates choose ouroboros, it's a strong quality signal.

Health Breakdown

Maintenance 8/25

Recency, release consistency, active ratio

Quality 12/25

Yanked ratio, deps, size, maturity, features

Community 10/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
119K/day avg+2%
050K100K150K200K250K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.18.5
39%
v0.17.2
27%
v0.18.0
19%
v0.15.6
9%
v0.18.4
6%

Release Timeline

50 releases11 yankedsince 2020
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2020
12
2021
19
2022
8
2023
8
2024
2
2025
1
2026
Less
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Yanked

Feature Flags

default =["std"]

std*

README

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Maintainers

Dependencies
3
direct dependencies
Dependents
2.3K
crates depend on ouroboros