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Crate features / smol_str

Feature flags · smol_str 0.3.7 · from crates.io 2026-10-24

smol_str features: what each one does, and the line to copy

Short answersmol_str 0.3.7 has 2 features. By default it turns on std; add default-features = false to start from nothing. It needs Rust 1.89 or newer.

Pick features

0.3.7latest version
2features
1optional dependencies
1.89MSRV (rust-version)

Every feature

FeatureIn defaultTurns on
serdedep:serde_core
stdyesserde_core?/std, borsh?/std

dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).

MSRV history

The minimum Rust version smol_str declares (rust-version), and the release that changed it:

  • 0.3.4 (2025-10-23): Rust 1.89

Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p smol_str --precise <version>, or use resolver 3, which picks compatible versions for you.

More on smol_str

docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2024

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