tracing_subscriber::fmt().with_env_filter(EnvFilter::from_env("LOG_LEVEL")).with_target(false).init(); Run Code Online (Sandbox Code Playgroud)
The different between (a) tracing_subscriber::fmt::init() and (b) tracing_subscriber::fmt().init() are: (a) depends on the env-filter feature which enabled by default (b) has no such feature depedence pub fn try_init() -> Result<(), Box<dyn Error + Send + Sync + 'static>> ...
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