Cargo Features

[dependencies]
weekday = { version = "0.3.0", default-features = false, features = ["with-chrono", "with-num-traits", "with-serde"] }
default = with-chrono

The with-chrono feature is set by default whenever weekday is added without default-features = false somewhere in the dependency tree.

with-chrono default = chrono
with-num-traits = num-traits
with-serde = serde

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.

chrono with-chrono
num-traits with-num-traits?
serde with-serde?