Cargo Features

[dependencies]
slack-hook3 = { version = "0.11.0", default-features = false, features = ["native-tls", "rustls-tls"] }
default = native-tls

The native-tls feature is set by default whenever slack-hook3 is added without default-features = false somewhere in the dependency tree.

native-tls default

Enables native-tls of reqwest ^0.11

reqwest:

Enables native-tls specific functionality not available by default.

rustls-tls

Enables rustls-tls of reqwest ^0.11

slack-hook3 has 3 features without comments.