Cargo Features
[dependencies]
tracing = { version = "0.1.41", default-features = false, features = ["max_level_warn", "max_level_trace", "release_max_level_error", "release_max_level_info", "release_max_level_trace", "async-await", "std", "log-always", "attributes", "valuable"] }- default = attributes, std
-
These default features are set whenever
tracingis added withoutdefault-features = false - max_level_off max_level_error max_level_warn
- max_level_info max_level_debug max_level_trace
- release_max_level_off release_max_level_error
- release_max_level_warn release_max_level_info
- release_max_level_debug release_max_level_trace
- async-await
-
This feature flag is no longer necessary.
- std default
-
Enables std of tracing-core
Affects
subscriber::with_default,subscriber::set_default… - log-always = log
- attributes default = tracing-attributes
- valuable
-
Enables valuable of tracing-core
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.
- log log-always?
-
Affects
tracing::log… - tracing-attributes attributes