Cargo Features

[dependencies]
prost-wkt-types = { version = "0.5.1", default-features = false, features = ["std", "vendored-protoc", "vendored-protox"] }
default = std

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

std default
vendored-protoc = protobuf-src
vendored-protox = protox

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.

protobuf-src build vendored-protoc?
protox build vendored-protox?