Exclude windows

Author: gyuheon0h

datadog-crashtracker/src/runtime_callback.rs

@@ -546,6 +546,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(unix)]
     fn test_frame_collection() {
         let _guard = TEST_MUTEX.lock().unwrap();
         ensure_callback_cleared();
@@ -596,6 +597,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(unix)]
     fn test_stacktrace_string_collection() {
         let _guard = TEST_MUTEX.lock().unwrap();
         ensure_callback_cleared();
@@ -627,6 +629,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(unix)]
     fn test_no_callback_registered() {
         let _guard = TEST_MUTEX.lock().unwrap();
         ensure_callback_cleared();
@@ -648,6 +651,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(unix)]
     fn test_direct_pipe_writing() {
         let _guard = TEST_MUTEX.lock().unwrap();
         ensure_callback_cleared();