Cargo Features

[dependencies]
duration-str = { version = "0.11.2", default-features = false, features = ["chrono", "serde", "time"] }
default = chrono, serde, time

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

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 default

Affects duration-str::parse_chrono

serde default
time default

Affects duration-str::parse_time