Crate features / bumpalo
Feature flags · bumpalo 3.20.3 · from crates.io 2026-10-24
bumpalo features: what each one does, and the line to copy
Short answerbumpalo 3.20.3 has 6 features. Nothing is on by default: turn on what you use. It needs Rust 1.71.1 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
allocator_api | nothing else (a switch the code checks) | |
bench_allocator_api | allocator_api, blink-alloc/nightly | |
boxed | nothing else (a switch the code checks) | |
collections | nothing else (a switch the code checks) | |
serde | dep:serde | |
std | 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 bumpalo declares (rust-version), and the release that changed it:
- 3.12.2 (2023-05-09): Rust 1.60.0
- 3.15.1 (2024-02-20): Rust 1.73.0
- 3.17.0 (2025-01-28): Rust 1.71.1
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p bumpalo --precise <version>, or use resolver 3, which picks compatible versions for you.
More on bumpalo
Real downloads, dependents and alternatives: bumpalo crate data (2M real downloads a day, 546 dependents).
Security record: bumpalo advisories.
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2021
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