Dogfood and bless tests

Author: flip1995

clippy_utils/src/sugg.rs

@@ -1010,7 +1010,7 @@ impl<'tcx> Delegate<'tcx> for DerefDelegate<'_, 'tcx> {
                             projections_handled = true;
                         },
                         // note: unable to trigger `Subslice` kind in tests
-                        ProjectionKind::Subslice => (),
+                        ProjectionKind::Subslice |
                         // Doesn't have surface syntax. Only occurs in patterns.
                         ProjectionKind::OpaqueCast => (),
                         ProjectionKind::Deref => {

tests/ui-internal/custom_ice_message.stderr

@@ -1,4 +1,5 @@
-thread '<unnamed>' panicked at 'Would you like some help with that?', clippy_lints/src/utils/internal_lints/produce_ice.rs
+thread '<unnamed>' panicked at clippy_lints/src/utils/internal_lints/produce_ice.rs:
+Would you like some help with that?
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 
 error: the compiler unexpectedly panicked. this is a bug.