Cargo Features

[dependencies]
kine-core = { version = "0.1.1", default-features = false, features = ["std", "tz-system-provider-builtin-iers", "tz-utc-provider-builtin-iers"] }
default = std

The std feature is set by default whenever kine-core is added without default-features = false somewhere in the dependency tree.

std default
tz-system-provider-builtin-iers
tz-utc-provider-builtin-iers

kine-core has 4 features without comments.