Cargo Features

[dependencies]
gcra = { version = "0.4.0", default-features = false, features = ["rate-limiter"] }
default = rate-limiter

The rate-limiter feature is set by default whenever gcra is added without default-features = false somewhere in the dependency tree.

rate-limiter default = dashmap, rustc-hash

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

dashmap rate-limiter
rustc-hash rate-limiter