Use latest stable toolchain in audit

.github/workflows/audit.yml

@@ -7,6 +7,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
       - uses: actions-rs/audit-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}

lib/src/event.rs

@@ -53,7 +53,7 @@ pub enum Tag {
 	/// The event is about a signal being delivered to the main process.
 	Signal(MainSignal),
 
-	/// The event is about the subprocess exiting.
+	/// The event is about the subprocess ending.
 	ProcessCompletion(Option<ProcessEnd>),
 }