Crate features / schemars
Feature flags · schemars 1.2.3 · from crates.io 2026-10-24
schemars features: what each one does, and the line to copy
Short answerschemars 1.2.3 has 5 features. By default it turns on derive, std; add default-features = false to start from nothing. It needs Rust 1.74 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
_ui_test | nothing else (a switch the code checks) | |
derive | yes | schemars_derive |
preserve_order | serde_json/preserve_order | |
raw_value | serde_json/raw_value | |
std | yes | nothing else (a switch the code checks) |
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 schemars declares (rust-version), and the release that changed it:
- 0.8.13 (2023-08-28): Rust 1.60
- 1.0.0-alpha.11 (2024-08-24): Rust 1.65
- 1.0.0-alpha.16 (2024-11-25): Rust 1.70
- 0.8.22 (2025-02-25): Rust 1.60
- 1.0.0-alpha.18 (2025-05-26): Rust 1.74
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p schemars --precise <version>, or use resolver 3, which picks compatible versions for you.
More on schemars
Real downloads, dependents and alternatives: schemars crate data (2.4M real downloads a day, 6,659 dependents).
docs.rs feature list · crates.io · license MIT · edition 2021
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