Cargo Features

feattle-sync has no features set by default.

[dependencies]
feattle-sync = { version = "1.0.0", features = ["s3"] }
s3 = rusoto_core, rusoto_s3

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

rusoto_core s3?
rusoto_s3 s3?