Use its own TypeckResults to avoid ICE

src/test/ui/impl-trait/bound-normalization-pass.default.stderr

@@ -1,5 +1,5 @@
 warning: the feature `impl_trait_in_bindings` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/bound-normalization-pass.rs:5:12
+  --> $DIR/bound-normalization-pass.rs:8:12
    |
 LL | #![feature(impl_trait_in_bindings)]
    |            ^^^^^^^^^^^^^^^^^^^^^^

src/test/ui/impl-trait/bound-normalization-pass.rs

@@ -1,5 +1,8 @@
 // check-pass
 // edition:2018
+// revisions: default sa
+//[sa] compile-flags: -Z save-analysis
+//-^ To make this the regression test for #75962.
 
 #![feature(type_alias_impl_trait)]
 #![feature(impl_trait_in_bindings)]

src/test/ui/impl-trait/bound-normalization-pass.sa.stderr

@@ -0,0 +1,11 @@
+warning: the feature `impl_trait_in_bindings` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/bound-normalization-pass.rs:8:12
+   |
+LL | #![feature(impl_trait_in_bindings)]
+   |            ^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `#[warn(incomplete_features)]` on by default
+   = note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information
+
+warning: 1 warning emitted
+