Cargo Features

[dependencies]
uuid-rs = { version = "0.6.4", default-features = false, features = ["mac", "rnd", "hsha1", "hmd5"] }
default = mac

The mac feature is set by default whenever uuid-rs is added without default-features = false somewhere in the dependency tree.

mac default = mac_address, rand
rnd = rand
hsha1 = sha1_smol
hmd5 = md5

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.

mac_address mac
rand mac rnd?
md5 hmd5?
sha1_smol hsha1?