Cargo Features
holochain_core has no features set by default.
[dependencies]
holochain_core = { version = "0.0.52-alpha2", features = ["newrelic-on"] }- newrelic-on = newrelic
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.