fix: resolve all doctest failures in rustfs-obs crate

crates/obs/src/global.rs

@@ -44,9 +44,9 @@ pub enum GlobalError {
 /// ```rust
 /// use rustfs_obs::{init_telemetry, load_config, set_global_guard};
 ///
-/// async fn init() -> Result<(), Box<dyn std::error::Error>> {
+/// fn init() -> Result<(), Box<dyn std::error::Error>> {
 ///     let config = load_config(None);
-///     let guard = init_telemetry(&config.observability).await?;
+///     let guard = init_telemetry(&config.observability);
 ///     set_global_guard(guard)?;
 ///     Ok(())
 /// }

crates/obs/src/lib.rs

@@ -22,11 +22,14 @@
 ///
 /// ## Usage
 ///
-/// ```rust
+/// ```no_run
 /// use rustfs_obs::{AppConfig, init_obs};
 ///
+/// # #[tokio::main]
+/// # async fn main() {
 /// let config = AppConfig::default();
-/// let (logger, guard) = init_obs(config);
+/// let (logger, guard) = init_obs(config).await;
+/// # }
 /// ```
 mod config;
 mod entry;
@@ -64,11 +67,14 @@ use tracing::{error, info};
 /// A tuple containing the logger and the telemetry guard
 ///
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::{AppConfig, init_obs};
 ///
+/// # #[tokio::main]
+/// # async fn main() {
 /// let config = AppConfig::default();
-/// let (logger, guard) = init_obs(config);
+/// let (logger, guard) = init_obs(config).await;
+/// # }
 /// ```
 pub async fn init_obs(config: AppConfig) -> (Arc<Mutex<Logger>>, telemetry::OtelGuard) {
     let guard = init_telemetry(&config.observability);
@@ -97,7 +103,7 @@ pub async fn init_obs(config: AppConfig) -> (Arc<Mutex<Logger>>, telemetry::Otel
 /// A reference to the global logger instance
 ///
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::get_logger;
 ///
 /// let logger = get_logger();

crates/obs/src/logger.rs

@@ -224,7 +224,7 @@ impl Logger {
 /// # Returns
 /// The global logger instance
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::{AppConfig, start_logger};
 ///
 /// let config = AppConfig::default();
@@ -270,7 +270,7 @@ pub async fn init_global_logger(config: &AppConfig, sinks: Vec<Arc<dyn Sink>>) -
 /// A reference to the global logger instance
 ///
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::get_global_logger;
 ///
 /// let logger = get_global_logger();
@@ -290,7 +290,7 @@ pub fn get_global_logger() -> &'static Arc<Mutex<Logger>> {
 /// Result indicating whether the operation was successful
 ///
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::log_info;
 ///
 /// async fn example() {
@@ -309,7 +309,7 @@ pub async fn log_info(message: &str, source: &str) -> Result<(), GlobalError> {
 /// # Returns
 /// Result indicating whether the operation was successful
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::log_error;
 ///
 /// async fn example() {
@@ -328,7 +328,7 @@ pub async fn log_error(message: &str, source: &str) -> Result<(), GlobalError> {
 /// Result indicating whether the operation was successful
 ///
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::log_warn;
 ///
 /// async fn example() {
@@ -348,7 +348,7 @@ pub async fn log_warn(message: &str, source: &str) -> Result<(), GlobalError> {
 /// Result indicating whether the operation was successful
 ///
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::log_debug;
 ///
 /// async fn example() {
@@ -369,7 +369,7 @@ pub async fn log_debug(message: &str, source: &str) -> Result<(), GlobalError> {
 /// Result indicating whether the operation was successful
 ///
 /// # Example
-/// ```
+/// ```no_run
 /// use rustfs_obs::log_trace;
 ///
 /// async fn example() {
@@ -392,7 +392,7 @@ pub async fn log_trace(message: &str, source: &str) -> Result<(), GlobalError> {
 /// # Returns
 /// Result indicating whether the operation was successful
 /// # Example
-/// ```
+/// ```no_run
 /// use tracing_core::Level;
 /// use rustfs_obs::log_with_context;
 ///