Rust 1.21
Rust 1.21 reached end of life on 2017-11-22 and is no longer supported. First release: 2017-10-12. Latest stable release: 1.21.0. Lifecycle periods below are derived from official vendor sources with provenance.
Latest stable 1.21.0 (2017-10-12)
Lifecycle & support periods
| Phase | From | Until | Provider | Source |
|---|---|---|---|---|
| standard support | 2017-10-12 | 2017-11-22 | Rust Project | Rust security / support policy |
| end of life | 2017-11-22 | — | Rust Project | Rust security / support policy |
Provenance
Every lifecycle fact is traceable to its authoritative source.
- Rust security / support policyfirst party · highhttps://www.rust-lang.org/policies/security
Retrieved 2026-08-29 · [policy-derived] Rust 1.21 EOL inferred as GA of the next minor stable train from official policy: only the most recent stable release receives support and security updates. Not an upstream-published EOL calendar field.
- Rust security / support policyfirst party · highhttps://www.rust-lang.org/policies/security
Retrieved 2026-08-29 · Rust 1.21 supported as the stable train. [policy-derived] EOL = GA of the next Rust minor line, per official policy that only the most recent stable release receives support/security updates.
Recent releases
- 1.21.02017-10-12