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defmt

v1.0.1 Growing

A highly efficient logging framework that targets resource-constrained devices, like microcontrollers

MIT OR Apache-2.0 Edition 2021

Quick Verdict

  • โœ“Stable API (1.x for 5+ years)
  • โœ“Massive adoption (4.2K crates depend on it)
  • โœ“Team maintained (4 owners)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
9.3M
Dependents
4.2K
Releases
27
Size
29KB

Deep Insights

๐Ÿ“Š
Steady growth

785.3K downloads in the last 30 days (26.2K/day), up 15% from the previous period.

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Widely adopted

4.2K crates depend on defmt. Strong ecosystem adoption means battle-tested code and long-term stability.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 92 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

โœ…
Stable for 5+ years

The API has been stable (1.x) for over 5 years with 27 releases. This level of maturity means you can depend on it without worrying about breaking changes.

๐Ÿ“
Compact crate

At 28KB, defmt is lightweight. Small crate size correlates with focused, well-scoped functionality.

โš ๏ธ
Notable yanked versions

19% of releases have been yanked. Check version history before pinning.

๐ŸŒŸ
Used by top crates

Notable dependents include chrono, tinyvec, rgb, heapless, nalgebra. When high-quality crates choose defmt, it's a strong quality signal.

Health Breakdown

Maintenance 8/25

Recency, release consistency, active ratio

Quality 17/25

Yanked ratio, deps, size, maturity, features

Community 20/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 10/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
22K/day avg+42%
010K20K30K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v1.0.1
34%
v0.3.100
32%
v0.3.8
15%
v0.3.10
9%
v0.3.5
9%

Release Timeline

27 releases5 yankedsince 2020
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A
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2020
5
2021
5
2022
2
2023
5
2024
5
2025
5
2026
Less
More|
Yanked

Feature Flags

allocip_in_coreencoding-rawunstable-testencoding-rzcobsavoid-default-panic

README

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Maintainers

Dependencies
4
direct dependencies
Dependents
4.2K
crates depend on defmt

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