Lib.rs

Cargo Features

[dependencies]
semver = { version = "1.0.20", default-features = false, features = ["std", "serde"] }

default = std

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

std default

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

serde implicit feature