Feature flags of opentelemetry

Cargo Features

[dependencies]
opentelemetry_api = { version = "0.20.0", default-features = false, features = ["trace", "metrics", "logs", "logs_level_enabled", "testing"] }

default = trace: The trace feature is set by default whenever opentelemetry_api is added without default-features = false somewhere in the dependency tree.
trace default testing? = pin-project-lite: Affects opentelemetry_api::trace, opentelemetry_api::time…
metrics: Affects opentelemetry_api::metrics, opentelemetry_api::time…
logs logs_level_enabled?: Affects opentelemetry_api::logs…
logs_level_enabled = logs: Affects logger::Logger.event_enabled…
testing = trace

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.

pin-project-lite trace