Cargo Features

SortedVec has no features set by default.

sorted-vec = { version = "0.8.3", features = ["serde-nontransparent"] }
serde-nontransparent = 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.

serde serde-nontransparent?