style: apply cargo +nightly fmt

Author: azerupi

rclrs/src/executor/event_callback.rs

@@ -25,8 +25,7 @@
 //! Getting that ordering wrong is a use-after-free, since the middleware may be
 //! calling the trampoline from another thread at the moment of teardown.
 
-use std::os::raw::c_void;
-use std::sync::Arc;
+use std::{os::raw::c_void, sync::Arc};
 
 use crate::{rcl_bindings::*, OnReadyHandle, RclrsError, ToResult};
 
@@ -151,11 +150,12 @@ impl Drop for CtxBox {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::subscription::set_subscription_on_new_message;
-    use crate::*;
+    use crate::{subscription::set_subscription_on_new_message, *};
     use ros_env::test_msgs::msg;
-    use std::sync::atomic::{AtomicUsize, Ordering};
-    use std::time::{Duration, Instant};
+    use std::{
+        sync::atomic::{AtomicUsize, Ordering},
+        time::{Duration, Instant},
+    };
 
     /// The push callback fires when messages arrive, without ever spinning the
     /// executor (i.e. without `rcl_wait`).