Cargo Features

[dependencies]
slog-loggly = { version = "0.6.0", default-features = false, features = ["http1", "http2", "runtime"] }
default = http1, runtime

These default features are set whenever slog-loggly is added without default-features = false somewhere in the dependency tree.

http1 default
http2

Enables http2 of reqwest

runtime default

Enables rt of tokio

tokio:

Includes basic task execution capabilities

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.

tokio runtime