tokio: gate some panicking tests with #[cfg(panic = "unwind")] (#6110)

tokio/tests/rt_common.rs

@@ -845,6 +845,7 @@ rt_test! {
     }
 
     #[cfg_attr(target_os = "wasi", ignore = "Wasi does not support threads or panic recovery")]
+    #[cfg(panic = "unwind")]
     #[test]
     fn panic_in_task() {
         let rt = rt();

tokio/tests/task_abort.rs

@@ -176,6 +176,7 @@ fn test_abort_wakes_task_3964() {
 /// Checks that aborting a task whose destructor panics does not allow the
 /// panic to escape the task.
 #[test]
+#[cfg(panic = "unwind")]
 fn test_abort_task_that_panics_on_drop_contained() {
     let rt = Builder::new_current_thread().enable_time().build().unwrap();
 
@@ -199,6 +200,7 @@ fn test_abort_task_that_panics_on_drop_contained() {
 
 /// Checks that aborting a task whose destructor panics has the expected result.
 #[test]
+#[cfg(panic = "unwind")]
 fn test_abort_task_that_panics_on_drop_returned() {
     let rt = Builder::new_current_thread().enable_time().build().unwrap();
 

tokio/tests/task_blocking.rs

@@ -114,6 +114,7 @@ fn can_enter_current_thread_rt_from_within_block_in_place() {
 }
 
 #[test]
+#[cfg(panic = "unwind")]
 fn useful_panic_message_when_dropping_rt_in_rt() {
     use std::panic::{catch_unwind, AssertUnwindSafe};