Cargo Features

[dependencies]
csv-stream = { version = "0.1.3", default-features = false, features = ["stream"] }
default = stream

The stream feature is set by default whenever csv-stream is added without default-features = false somewhere in the dependency tree.

stream default = futures, pin-project

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.

futures stream
pin-project stream