crates.io · crates:heapless

heapless active

`static` friendly data structures that don't require dynamic memory allocation

Latest stable version	0.9.3
Published	2026-04-30 21:21:52 UTC
Install	`cargo add heapless`
Minimum Rust version (rust-version)	`Rust ≥ 1.87`
License	MIT OR Apache-2.0
Advisories on latest version	none known
Last verified	2026-10-09 03:02:49 UTC
Sources	api.osv.dev, crates.io

Maintenance

Activity	active
Last stable release	2026-04-30 21:21:52 UTC · 161 days ago
Stable releases in the last 12 months	2
Published versions	56

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

Version	Published
`0.9.3`	2026-04-30 21:21:52 UTC
`0.9.2`	2025-11-12 12:46:46 UTC
`0.9.1`	2025-08-20 09:25:34 UTC
`0.9.0` withdrawn	2025-04-28 21:23:23 UTC
`0.7.17`	2023-12-04 13:51:20 UTC
`0.8.0`	2023-11-08 15:34:13 UTC
`0.7.16`	2022-08-09 13:47:30 UTC
`0.7.15`	2022-07-05 10:19:48 UTC
`0.7.14`	2022-06-15 13:15:20 UTC
`0.7.13`	2022-05-16 10:14:32 UTC
`0.7.12`	2022-05-12 13:27:37 UTC
`0.7.11`	2022-05-09 13:25:25 UTC
`0.7.10`	2022-01-21 11:03:22 UTC
`0.7.9`	2021-12-16 09:58:22 UTC
`0.7.8`	2021-11-11 09:40:43 UTC
`0.7.7`	2021-09-22 05:12:51 UTC
`0.7.6`	2021-09-21 15:43:48 UTC
`0.7.5`	2021-08-16 12:17:32 UTC
`0.7.4`	2021-08-06 16:44:42 UTC
`0.7.3`	2021-07-01 08:21:07 UTC

Showing the 20 most recent of 54 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

Runtime	Newest compatible version
`rust 1.63`	`0.9.1`
`rust 1.70`	`0.9.1`
`rust 1.75`	`0.9.1`
`rust 1.80`	`0.9.1`
`rust 1.85`	`0.9.1`
`rust 1.90`	`0.9.3`

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Frequently asked questions

What is the latest version of heapless?

The latest stable version of heapless is 0.9.3, published on 2026-04-30. Verified by Vigia on 2026-10-09.

How do I install the latest version of heapless?

Run cargo add heapless. The latest stable version is 0.9.3 (verified 2026-10-09).

Is heapless deprecated?

No. heapless is not marked as deprecated in the registry.

Which Rust version does heapless require?

heapless 0.9.3 declares this requirement: Rust ≥ 1.87.

Does heapless 0.9.3 have known vulnerabilities?

No known advisories affect heapless 0.9.3 according to the data Vigia checks.

Is heapless still maintained?

heapless published 2 stable releases in the last 12 months; the most recent was 161 days ago. Activity: active.

Observed changes

No changes observed yet since Vigia started tracking this package.

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