diff --git a/src/test/ui/type-alias-impl-trait/generic_type_does_not_live_long_enough.nll.stderr b/src/test/ui/type-alias-impl-trait/generic_type_does_not_live_long_enough.nll.stderr
new file mode 100644
index 00000000000..84f48cd6c0d
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/generic_type_does_not_live_long_enough.nll.stderr
@@ -0,0 +1,41 @@
+error: at least one trait must be specified
+  --> $DIR/generic_type_does_not_live_long_enough.rs:9:24
+   |
+LL | type WrongGeneric<T> = impl 'static;
+   |                        ^^^^^^^^^^^^
+
+error[E0308]: mismatched types
+  --> $DIR/generic_type_does_not_live_long_enough.rs:6:18
+   |
+LL |     let z: i32 = x;
+   |            ---   ^ expected `i32`, found opaque type
+   |            |
+   |            expected due to this
+...
+LL | type WrongGeneric<T> = impl 'static;
+   |                        ------------ the found opaque type
+   |
+   = note:     expected type `i32`
+           found opaque type `impl Sized`
+
+error[E0310]: the parameter type `T` may not live long enough
+  --> $DIR/generic_type_does_not_live_long_enough.rs:13:30
+   |
+LL | fn wrong_generic<T>(t: T) -> WrongGeneric<T> {
+   |                              ^^^^^^^^^^^^^^^
+   |
+   = help: consider adding an explicit lifetime bound `T: 'static`...
+
+error[E0310]: the parameter type `T` may not live long enough
+  --> $DIR/generic_type_does_not_live_long_enough.rs:9:24
+   |
+LL | type WrongGeneric<T> = impl 'static;
+   |                        ^^^^^^^^^^^^
+   |
+   = help: consider adding an explicit lifetime bound `T: 'static`...
+   = note: ...so that the type `T` will meet its required lifetime bounds
+
+error: aborting due to 4 previous errors
+
+Some errors have detailed explanations: E0308, E0310.
+For more information about an error, try `rustc --explain E0308`.
diff --git a/src/test/ui/type-alias-impl-trait/issue-57611-trait-alias.nll.stderr b/src/test/ui/type-alias-impl-trait/issue-57611-trait-alias.nll.stderr
new file mode 100644
index 00000000000..a4ccae4eb7e
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/issue-57611-trait-alias.nll.stderr
@@ -0,0 +1,38 @@
+error: higher-ranked subtype error
+  --> $DIR/issue-57611-trait-alias.rs:21:9
+   |
+LL |         |x| x
+   |         ^^^^^
+
+error: higher-ranked subtype error
+  --> $DIR/issue-57611-trait-alias.rs:21:9
+   |
+LL |         |x| x
+   |         ^^^^^
+
+error[E0308]: mismatched types
+  --> $DIR/issue-57611-trait-alias.rs:17:16
+   |
+LL |     type Bar = impl Baz<Self, Self>;
+   |                ^^^^^^^^^^^^^^^^^^^^ one type is more general than the other
+   |
+   = note: expected type `for<'r> Fn<(&'r X,)>`
+              found type `Fn<(&'static X,)>`
+note: this closure does not fulfill the lifetime requirements
+  --> $DIR/issue-57611-trait-alias.rs:21:9
+   |
+LL |         |x| x
+   |         ^^^^^
+
+error: implementation of `FnOnce` is not general enough
+  --> $DIR/issue-57611-trait-alias.rs:17:16
+   |
+LL |     type Bar = impl Baz<Self, Self>;
+   |                ^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
+   |
+   = note: closure with signature `fn(&'static X) -> &'static X` must implement `FnOnce<(&'0 X,)>`, for any lifetime `'0`...
+   = note: ...but it actually implements `FnOnce<(&'static X,)>`
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0308`.