Cargo Features

[dependencies]
mapcell = { version = "0.0.0", default-features = false, features = ["no_std", "std"] }
default = std

The std feature is set by default whenever mapcell is added without default-features = false somewhere in the dependency tree.

no_std = hashbrown
std default

Enables std of atomic ^0.5

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.

hashbrown no_std?

Enables hashbrown ^0.12