Cargo Features

mit-hook-test-helper has no features set by default.

mit-hook-test-helper = { version = "5.12.196", features = ["vendored-openssl"] }

Enables vendored of openssl

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.

openssl vendored-openssl?