Cargo Features

failsafe = { version = "1.2.0", default-features = false, features = ["futures-support"] }
default = futures-support

The futures-support feature is set by default whenever failsafe is added without default-features = false somewhere in the dependency tree.

futures-support default = futures-core, pin-project

Affects failsafe::futures

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-core futures-support
pin-project futures-support