Cargo Features
[dependencies]
problem = { version = "5.4.0", default-features = false, features = ["send-sync", "log", "backtrace"] }
- default = backtrace, log
-
These default features are set whenever
problemis added withoutsomewhere in the dependency tree.default-features = false - send-sync
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.