runtime: update panic messages to include version (#3461)

tokio/src/io/driver/mod.rs

@@ -260,7 +260,7 @@ cfg_rt! {
         /// flag is not enabled.
         pub(super) fn current() -> Self {
             crate::runtime::context::io_handle()
-                .expect("there is no reactor running, must be called from the context of Tokio runtime")
+                .expect("there is no reactor running, must be called from the context of a Tokio 0.3.x runtime")
         }
     }
 }
@@ -274,7 +274,7 @@ cfg_not_rt! {
         /// This function panics if there is no current reactor set, or if the `rt`
         /// feature flag is not enabled.
         pub(super) fn current() -> Self {
-            panic!("there is no reactor running, must be called from the context of Tokio runtime with `rt` enabled.")
+            panic!("there is no reactor running, must be called from the context of a Tokio 0.3.x runtime with `rt` enabled.")
         }
     }
 }

tokio/src/runtime/blocking/pool.rs

@@ -81,7 +81,7 @@ where
     F: FnOnce() -> R + Send + 'static,
     R: Send + 'static,
 {
-    let rt = context::current().expect("not currently running on the Tokio runtime.");
+    let rt = context::current().expect("not currently running on a Tokio 0.3.x runtime.");
     rt.spawn_blocking(func)
 }
 
@@ -91,7 +91,7 @@ where
     F: FnOnce() -> R + Send + 'static,
     R: Send + 'static,
 {
-    let rt = context::current().expect("not currently running on the Tokio runtime.");
+    let rt = context::current().expect("not currently running on a Tokio 0.3.x runtime.");
 
     let (task, _handle) = task::joinable(BlockingTask::new(func));
     rt.blocking_spawner.spawn(task, &rt)

tokio/src/runtime/handle.rs

@@ -97,7 +97,7 @@ impl Handle {
     /// # }
     /// ```
     pub fn current() -> Self {
-        context::current().expect("not currently running on the Tokio runtime.")
+        context::current().expect("not currently running on a Tokio 0.3.x runtime.")
     }
 
     /// Returns a Handle view over the currently running Runtime

tokio/src/task/spawn.rs

@@ -129,7 +129,7 @@ cfg_rt! {
         T::Output: Send + 'static,
     {
         let spawn_handle = runtime::context::spawn_handle()
-        .expect("must be called from the context of Tokio runtime configured with either `basic_scheduler` or `threaded_scheduler`");
+        .expect("must be called from the context of a Tokio 0.3.x runtime configured with either `basic_scheduler` or `threaded_scheduler`");
         let task = crate::util::trace::task(task, "task");
         spawn_handle.spawn(task)
     }

tokio/src/time/driver/handle.rs

@@ -47,7 +47,7 @@ cfg_rt! {
         /// panicking.
         pub(crate) fn current() -> Self {
             crate::runtime::context::time_handle()
-                .expect("there is no timer running, must be called from the context of Tokio runtime")
+                .expect("there is no timer running, must be called from the context of a Tokio 0.3.x runtime")
         }
     }
 }
@@ -71,7 +71,7 @@ cfg_not_rt! {
         /// lazy, and so outside executed inside the runtime successfuly without
         /// panicking.
         pub(crate) fn current() -> Self {
-            panic!("there is no timer running, must be called from the context of Tokio runtime or \
+            panic!("there is no timer running, must be called from the context of a Tokio 0.3.x runtime or \
             `rt` is not enabled")
         }
     }