Cargo Features

prost = { version = "0.12.3", default-features = false, features = ["std", "no-recursion-limit", "prost-derive"] }
default = prost-derive, std

These default features are set whenever prost is added without default-features = false somewhere in the dependency tree.

std default

Affects encoding::hash_map


Features from optional dependencies

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

prost-derive default