Cargo Features

[dependencies]
placement-new = { version = "0.3.0", default-features = false, features = ["alloc", "derive"] }
default = alloc, derive

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

alloc default
derive default = placement-new-derive

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.

placement-new-derive derive