crates.io · crates:once_cell_polyfill
once_cell_polyfill active
Polyfill for `OnceCell` stdlib feature for use with older MSRVs
| Latest stable version | 1.70.2 |
|---|---|
| Published | 2025-10-21 16:41:12 UTC |
| Install | cargo add once_cell_polyfill |
| Minimum Rust version (rust-version) | Rust ≥ 1.70.0 |
| License | MIT OR Apache-2.0 |
| Advisories on latest version | none known |
| Last verified | 2026-10-09 02:58:35 UTC |
| Sources | api.osv.dev, crates.io |
Maintenance
| Activity | slowing down |
|---|---|
| Last stable release | 2025-10-21 16:49:23 UTC · 352 days ago |
| Stable releases in the last 12 months | 2 |
| Published versions | 5 |
Heuristic based only on release dates; it does not measure issue or security response times.
Version history
| Version | Published |
|---|---|
1.56.1 | 2025-10-21 16:49:23 UTC |
1.70.2 | 2025-10-21 16:41:12 UTC |
1.70.1 | 2025-05-22 14:04:16 UTC |
1.70.0 | 2025-05-22 01:42:22 UTC |
1.56.0 | 2025-05-22 01:41:28 UTC |
Showing the 5 most recent of 5 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 | 1.56.1 |
rust 1.70 | 1.70.2 |
rust 1.75 | 1.70.2 |
rust 1.80 | 1.70.2 |
rust 1.85 | 1.70.2 |
rust 1.90 | 1.70.2 |
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Frequently asked questions
What is the latest version of once_cell_polyfill?
The latest stable version of once_cell_polyfill is 1.70.2, published on 2025-10-21. Verified by Vigia on 2026-10-09.
How do I install the latest version of once_cell_polyfill?
Run cargo add once_cell_polyfill. The latest stable version is 1.70.2 (verified 2026-10-09).
Is once_cell_polyfill deprecated?
No. once_cell_polyfill is not marked as deprecated in the registry.
Which Rust version does once_cell_polyfill require?
once_cell_polyfill 1.70.2 declares this requirement: Rust ≥ 1.70.0.
Does once_cell_polyfill 1.70.2 have known vulnerabilities?
No known advisories affect once_cell_polyfill 1.70.2 according to the data Vigia checks.
Is once_cell_polyfill still maintained?
once_cell_polyfill published 2 stable releases in the last 12 months; the most recent was 352 days ago. Activity: slowing down.
Observed changes
No changes observed yet since Vigia started tracking this package.
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