Cargo Features

[dependencies]
cargo-pgrx = { version = "0.12.8", default-features = false, features = ["native-tls", "rustls"] }
default = rustls

The rustls feature is set by default whenever cargo-pgrx is added without default-features = false somewhere in the dependency tree.

native-tls

Enables native-tls of ureq

rustls default

Enables native-certs and tls of ureq

cargo-pgrx has 3 features without comments.