Cargo Features

sigstat has no features set by default.

[dependencies]
sigstat = { version = "0.0.1", features = ["vendored_openssl"] }
vendored_openssl = 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?