Crate features / toml
Feature flags · toml 1.1.8+spec-1.1.0 · from crates.io 2026-10-24
toml features: what each one does, and the line to copy
Short answertoml 1.1.8+spec-1.1.0 has 8 features. By default it turns on std, serde, parse, display; add default-features = false to start from nothing. It needs Rust 1.85 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
debug | std, toml_parser?/debug, dep:anstream, dep:anstyle | |
display | yes | dep:toml_writer |
fast_hash | preserve_order, dep:foldhash | |
parse | yes | dep:toml_parser, dep:winnow |
preserve_order | dep:indexmap, std | |
serde | yes | dep:serde_core, toml_datetime/serde, serde_spanned/serde |
std | yes | indexmap?/std, serde_core?/std, toml_parser?/std, toml_writer?/std, toml_datetime/std, serde_spanned/std |
unbounded | 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 toml declares (rust-version), and the release that changed it:
- 0.5.10 (2022-12-14): Rust 1.48.0
- 0.6.0 (2023-01-23): Rust 1.60.0
- 0.7.4 (2023-05-18): Rust 1.64.0
- 0.7.7 (2023-09-08): Rust 1.66.0
- 0.8.3 (2023-10-23): Rust 1.67
- 0.8.9 (2024-01-31): Rust 1.69
- 0.8.11 (2024-03-11): Rust 1.70
- 0.8.13 (2024-05-15): Rust 1.65
- 0.8.21 (2025-04-25): Rust 1.66
- 0.9.7 (2025-09-18): Rust 1.76
- 1.1.0+spec-1.1.0 (2026-03-23): Rust 1.85
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p toml --precise <version>, or use resolver 3, which picks compatible versions for you.
More on toml
Real downloads, dependents and alternatives: toml crate data (3M real downloads a day, 20,777 dependents).
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2024
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