1 files changed, 20 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-2951.stderr b/src/test/ui/issues/issue-2951.stderr
new file mode 100644
index 000000000..538bbe2f5
--- /dev/null
+++ b/src/test/ui/issues/issue-2951.stderr
@@ -0,0 +1,20 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-2951.rs:3:10
+   |
+LL | fn foo<T, U>(x: T, y: U) {
+   |        -  - found type parameter
+   |        |
+   |        expected type parameter
+LL |     let mut xx = x;
+   |                  - expected due to this value
+LL |     xx = y;
+   |          ^ expected type parameter `T`, found type parameter `U`
+   |
+   = note: expected type parameter `T`
+              found type parameter `U`
+   = note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
+   = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.