Cargo Features

rbase64 = { version = "2.0.3", default-features = false, features = ["cli", "parallel"] }
default = parallel

The parallel feature is set by default whenever rbase64 is added without default-features = false somewhere in the dependency tree.

cli = clap

Required by the binary

parallel default = rayon


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.

clap cli?
rayon parallel