Fix variance of thread::Scope.

m-ou-se · m-ou-se · commit c5cb2def06c2 · 2022-01-04T16:57:16.000+01:00
diff --git a/library/std/src/thread/scoped.rs b/library/std/src/thread/scoped.rs
@@ -11,7 +11,7 @@ use crate::sync::Arc;
 /// See [`scope`] for details.
 pub struct Scope<'env> {
     data: ScopeData,
-    env: PhantomData<&'env ()>,
+    env: PhantomData<&'env mut &'env ()>,
 }
 
 /// An owned permission to join on a scoped thread (block on its termination).

Original file line number	Diff line number	Diff line change
`@@ -11,7 +11,7 @@ use crate::sync::Arc;`
`11`	`11`	/// See [`scope`] for details.
`12`	`12`	`pub struct Scope<'env> {`
`13`	`13`	`data: ScopeData,`
`14`		`- env: PhantomData<&'env ()>,`
	`14`	`+ env: PhantomData<&'env mut &'env ()>,`
`15`	`15`	`}`
`16`	`16`
`17`	`17`	`/// An owned permission to join on a scoped thread (block on its termination).`