Cargo Features

[dependencies]
ticketed_lock = { version = "0.3.0", default-features = false, features = ["futures", "log"] }
default = log

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

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 implicit feature
log default