X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Ftest%2Fui%2Fnll%2Ftype-check-pointer-coercions.stderr;h=ccb3d33ac40647fe14f45cbfcf3a6fe4e85aa11f;hb=ac6e239b3bdc7b05b160f8431f17f53ba4d84c86;hp=39fd98f7151a000eb5f8490a71a63ad2d38ba2ef;hpb=14f55fa7498077236de62bc1b531ba15ba45a5fd;p=rust.git

diff --git a/src/test/ui/nll/type-check-pointer-coercions.stderr b/src/test/ui/nll/type-check-pointer-coercions.stderr
index 39fd98f7151..ccb3d33ac40 100644
--- a/src/test/ui/nll/type-check-pointer-coercions.stderr
+++ b/src/test/ui/nll/type-check-pointer-coercions.stderr
@@ -34,6 +34,9 @@ LL |     x
    |     ^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
    |
    = help: consider adding the following bound: `'b: 'a`
+   = note: requirement occurs because of a mutable pointer to &i32
+   = note: mutable pointers are invariant over their type parameter
+   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
 
 error: lifetime may not live long enough
   --> $DIR/type-check-pointer-coercions.rs:13:5
@@ -47,6 +50,9 @@ LL |     x
    |     ^ returning this value requires that `'a` must outlive `'b`
    |
    = help: consider adding the following bound: `'a: 'b`
+   = note: requirement occurs because of a mutable pointer to &i32
+   = note: mutable pointers are invariant over their type parameter
+   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
 
 help: `'b` and `'a` must be the same: replace one with the other